diff --git a/dbseed/create-db-structure.sql b/dbseed/create-db-structure.sql
index 15edca9d8..94d638fa9 100644
--- a/dbseed/create-db-structure.sql
+++ b/dbseed/create-db-structure.sql
@@ -5261,28 +5261,30 @@ WITH year_range AS (
   FROM public.statistical_unit
 )
 SELECT 'year'::public.history_resolution AS resolution
-     , EXTRACT(YEAR FROM time_start)::INT AS year
+     , EXTRACT(YEAR FROM curr_start)::INT AS year
      , NULL::INTEGER AS month
-     , series.time_start::DATE
-     , (series.time_start + interval '1 year' - interval '1 day')::DATE AS time_stop
+     , (series.curr_start - interval '1 day')::DATE AS prev_stop
+     , series.curr_start::DATE
+     , (series.curr_start + interval '1 year' - interval '1 day')::DATE AS curr_stop
 FROM year_range,
 LATERAL generate_series(
     date_trunc('year', year_range.start_year)::DATE,
     date_trunc('year', year_range.stop_year)::DATE,
     interval '1 year'
-) AS series(time_start)
+) AS series(curr_start)
 UNION ALL
 SELECT 'year-month'::public.history_resolution AS resolution
-     , EXTRACT(YEAR FROM time_start)::INT AS year
-     , EXTRACT(MONTH FROM time_start)::INT AS month
-     , series.time_start::DATE
-     , (series.time_start + interval '1 month' - interval '1 day')::DATE AS time_stop
+     , EXTRACT(YEAR FROM curr_start)::INT AS year
+     , EXTRACT(MONTH FROM curr_start)::INT AS month
+     , (series.curr_start - interval '1 day')::DATE AS prev_stop
+     , series.curr_start::DATE
+     , (series.curr_start + interval '1 month' - interval '1 day')::DATE AS curr_stop
 FROM year_range,
 LATERAL generate_series(
     date_trunc('month', year_range.start_year)::DATE,
     date_trunc('month', year_range.stop_year)::DATE,
     interval '1 month'
-) AS series(time_start)
+) AS series(curr_start)
 ;
 
 
@@ -5292,37 +5294,38 @@ CREATE VIEW public.statistical_history_def AS
 WITH year_with_unit_basis AS (
     SELECT range.resolution AS resolution
          , range.year AS year
-         , COALESCE(su_start.unit_type,su_stop.unit_type) AS unit_type
+         , su_curr.unit_type AS unit_type
          --
-         , COALESCE(su_start.unit_id, su_stop.unit_id) AS unit_id
-         , su_start.unit_id IS NOT NULL AND su_stop.unit_id IS NOT NULL AS track_changes
+         , su_curr.unit_id AS unit_id
+         , su_prev.unit_id IS NOT NULL AND su_curr.unit_id IS NOT NULL AS track_changes
          --
-         , COALESCE(su_stop.birth_date, su_start.birth_date) AS birth_date
-         , COALESCE(su_stop.death_date, su_start.death_date) AS death_date
+         , su_curr.birth_date AS birth_date
+         , su_curr.death_date AS death_date
          --
-         , COALESCE(range.time_start <= COALESCE(su_stop.birth_date, su_start.birth_date),false) AS born
-         , COALESCE(COALESCE(su_stop.death_date, su_start.death_date) <= range.time_stop ,false) AS died
+         , COALESCE(range.curr_start <= su_curr.birth_date AND su_curr.birth_date <= range.curr_stop,false) AS born
+         , COALESCE(range.curr_start <= su_curr.death_date AND su_curr.death_date <= range.curr_stop,false) AS died
          --
-         , su_start.primary_activity_category_path   AS start_primary_activity_category_path
-         , su_start.secondary_activity_category_path AS start_secondary_activity_category_path
-         , su_start.sector_path                      AS start_sector_path
-         , su_start.legal_form_id                    AS start_legal_form_id
-         , su_start.physical_region_path             AS start_physical_region_path
-         , su_start.physical_country_id              AS start_physical_country_id
+         , su_prev.name                             AS prev_name
+         , su_prev.primary_activity_category_path   AS prev_primary_activity_category_path
+         , su_prev.secondary_activity_category_path AS prev_secondary_activity_category_path
+         , su_prev.sector_path                      AS prev_sector_path
+         , su_prev.legal_form_id                    AS prev_legal_form_id
+         , su_prev.physical_region_path             AS prev_physical_region_path
+         , su_prev.physical_country_id              AS prev_physical_country_id
+         , su_prev.physical_address_part1           AS prev_physical_address_part1
+         , su_prev.physical_address_part2           AS prev_physical_address_part2
+         , su_prev.physical_address_part3           AS prev_physical_address_part3
          --
-         , su_stop.primary_activity_category_path    AS stop_primary_activity_category_path
-         , su_stop.secondary_activity_category_path  AS stop_secondary_activity_category_path
-         , su_stop.sector_path                       AS stop_sector_path
-         , su_stop.legal_form_id                     AS stop_legal_form_id
-         , su_stop.physical_region_path              AS stop_physical_region_path
-         , su_stop.physical_country_id               AS stop_physical_country_id
-         --
-         , COALESCE(su_stop.primary_activity_category_path  , su_start.primary_activity_category_path)   AS primary_activity_category_path
-         , COALESCE(su_stop.secondary_activity_category_path, su_start.secondary_activity_category_path) AS secondary_activity_category_path
-         , COALESCE(su_stop.sector_path                     , su_start.sector_path)                      AS sector_path
-         , COALESCE(su_stop.legal_form_id                   , su_start.legal_form_id)                    AS legal_form_id
-         , COALESCE(su_stop.physical_region_path            , su_start.physical_region_path)             AS physical_region_path
-         , COALESCE(su_stop.physical_country_id             , su_start.physical_country_id)              AS physical_country_id
+         , su_curr.name                             AS curr_name
+         , su_curr.primary_activity_category_path   AS curr_primary_activity_category_path
+         , su_curr.secondary_activity_category_path AS curr_secondary_activity_category_path
+         , su_curr.sector_path                      AS curr_sector_path
+         , su_curr.legal_form_id                    AS curr_legal_form_id
+         , su_curr.physical_region_path             AS curr_physical_region_path
+         , su_curr.physical_country_id              AS curr_physical_country_id
+         , su_curr.physical_address_part1           AS curr_physical_address_part1
+         , su_curr.physical_address_part2           AS curr_physical_address_part2
+         , su_curr.physical_address_part3           AS curr_physical_address_part3
          --
          -- Notice that `stats` is the stats of this particular unit as recorded,
          -- while stats_summary is the aggregated stats of multiple contained units.
@@ -5330,31 +5333,48 @@ WITH year_with_unit_basis AS (
          -- changes, and not at the summaries, as I don't see how it makes sense
          -- to track changes in statistical summaries, but rather in the reported
          -- statistical variables, and then possibly summarise the changes.
-         , su_start.stats AS start_stats
-         , su_stop.stats AS stop_stats
+         , su_prev.stats AS prev_stats
+         , su_curr.stats AS curr_stats
          --
-         , COALESCE(su_stop.stats , su_start.stats) AS stats
-         , COALESCE(su_stop.stats_summary , su_start.stats_summary) AS stats_summary
+         , su_curr.stats AS stats
+         , su_curr.stats_summary AS stats_summary
          --
     FROM public.statistical_history_periods AS range
-    LEFT JOIN public.statistical_unit AS su_start
-           ON su_start.valid_from <= range.time_start AND range.time_start <= su_start.valid_to
-    LEFT JOIN public.statistical_unit AS su_stop
-           ON su_stop.valid_from <= range.time_stop AND range.time_stop <= su_stop.valid_to
-    WHERE range.resolution = 'year' AND
-        ( su_start.unit_type IS NULL
-       OR su_stop.unit_type IS NULL
-       OR su_start.unit_type = su_stop.unit_type AND su_start.unit_id = su_stop.unit_id
-        )
+    JOIN LATERAL (
+      -- Within a range find the last row of each timeline
+      SELECT *
+      FROM (
+        SELECT su_range.*
+             , ROW_NUMBER() OVER (PARTITION BY su_range.unit_type, su_range.unit_id ORDER BY su_range.valid_from DESC) = 1 AS last_in_range
+        FROM public.statistical_unit AS su_range
+        WHERE daterange(su_range.valid_from, su_range.valid_to, '[]') && daterange(range.curr_start,range.curr_stop,'[]')
+          -- Entries already dead entries are not relevant.
+          AND (su_range.death_date IS NULL OR range.curr_start <= su_range.death_date)
+          -- Entries not yet born are not relevant.
+          AND (su_range.birth_date IS NULL OR su_range.birth_date <= range.curr_stop)
+      ) AS range_units
+      WHERE last_in_range
+    ) AS su_curr ON true
+    LEFT JOIN public.statistical_unit AS su_prev
+      -- There may be a previous entry to compare with.
+      ON su_prev.valid_from <= range.prev_stop AND range.prev_stop <= su_prev.valid_to
+      AND su_prev.unit_type = su_curr.unit_type AND su_prev.unit_id = su_curr.unit_id
+    WHERE range.resolution = 'year'
 ), year_with_unit_derived AS (
     SELECT basis.*
          --
-         , track_changes AND NOT born AND not died AND start_primary_activity_category_path   IS DISTINCT FROM stop_primary_activity_category_path   AS primary_activity_category_changed
-         , track_changes AND NOT born AND not died AND start_secondary_activity_category_path IS DISTINCT FROM stop_secondary_activity_category_path AS secondary_activity_category_changed
-         , track_changes AND NOT born AND not died AND start_sector_path                      IS DISTINCT FROM stop_sector_path                      AS sector_changed
-         , track_changes AND NOT born AND not died AND start_legal_form_id                    IS DISTINCT FROM stop_legal_form_id                    AS legal_form_changed
-         , track_changes AND NOT born AND not died AND start_physical_region_path             IS DISTINCT FROM stop_physical_region_path             AS physical_region_changed
-         , track_changes AND NOT born AND not died AND start_physical_country_id              IS DISTINCT FROM stop_physical_country_id              AS physical_country_changed
+         , track_changes AND NOT born AND not died AND prev_name                             IS DISTINCT FROM curr_name                             AS name_changed
+         , track_changes AND NOT born AND not died AND prev_primary_activity_category_path   IS DISTINCT FROM curr_primary_activity_category_path   AS primary_activity_category_changed
+         , track_changes AND NOT born AND not died AND prev_secondary_activity_category_path IS DISTINCT FROM curr_secondary_activity_category_path AS secondary_activity_category_changed
+         , track_changes AND NOT born AND not died AND prev_sector_path                      IS DISTINCT FROM curr_sector_path                      AS sector_changed
+         , track_changes AND NOT born AND not died AND prev_legal_form_id                    IS DISTINCT FROM curr_legal_form_id                    AS legal_form_changed
+         , track_changes AND NOT born AND not died AND prev_physical_region_path             IS DISTINCT FROM curr_physical_region_path             AS physical_region_changed
+         , track_changes AND NOT born AND not died AND prev_physical_country_id              IS DISTINCT FROM curr_physical_country_id              AS physical_country_changed
+         , track_changes AND NOT born AND not died AND (
+                 prev_physical_address_part1 IS DISTINCT FROM curr_physical_address_part1
+              OR prev_physical_address_part2 IS DISTINCT FROM curr_physical_address_part2
+              OR prev_physical_address_part3 IS DISTINCT FROM curr_physical_address_part3
+         ) AS physical_address_changed
          --
          -- TODO: Track the change in `stats` and put that into `stats_change` using `public.stats_change`.
          --, CASE WHEN track_changes THEN public.stats_change(start_stats,stop_stats) ELSE NULL END AS stats_change
@@ -5364,63 +5384,81 @@ WITH year_with_unit_basis AS (
     SELECT range.resolution AS resolution
          , range.year AS year
          , range.month AS month
-         , COALESCE(su_start.unit_type,su_stop.unit_type) AS unit_type
-         --
-         , COALESCE(su_start.unit_id, su_stop.unit_id) AS unit_id
-         , su_start.unit_id IS NOT NULL AND su_stop.unit_id IS NOT NULL AS track_changes
+         , su_curr.unit_type AS unit_type
          --
-         , COALESCE(su_stop.birth_date, su_start.birth_date) AS birth_date
-         , COALESCE(su_stop.death_date, su_start.death_date) AS death_date
+         , su_curr.unit_id AS unit_id
+         , su_prev.unit_id IS NOT NULL AND su_curr.unit_id IS NOT NULL AS track_changes
          --
-         , COALESCE(range.time_start <= COALESCE(su_stop.birth_date, su_start.birth_date),false) AS born
-         , COALESCE(COALESCE(su_stop.death_date, su_start.death_date) <= range.time_stop ,false) AS died
+         , su_curr.birth_date AS birth_date
+         , su_curr.death_date AS death_date
          --
-         , su_start.primary_activity_category_path   AS start_primary_activity_category_path
-         , su_start.secondary_activity_category_path AS start_secondary_activity_category_path
-         , su_start.sector_path                      AS start_sector_path
-         , su_start.legal_form_id                    AS start_legal_form_id
-         , su_start.physical_region_path             AS start_physical_region_path
-         , su_start.physical_country_id              AS start_physical_country_id
+         , COALESCE(range.curr_start <= su_curr.birth_date AND su_curr.birth_date <= range.curr_stop,false) AS born
+         , COALESCE(range.curr_start <= su_curr.death_date AND su_curr.death_date <= range.curr_stop,false) AS died
          --
-         , su_stop.primary_activity_category_path    AS stop_primary_activity_category_path
-         , su_stop.secondary_activity_category_path  AS stop_secondary_activity_category_path
-         , su_stop.sector_path                       AS stop_sector_path
-         , su_stop.legal_form_id                     AS stop_legal_form_id
-         , su_stop.physical_region_path              AS stop_physical_region_path
-         , su_stop.physical_country_id               AS stop_physical_country_id
+         , su_prev.name                             AS prev_name
+         , su_prev.primary_activity_category_path   AS prev_primary_activity_category_path
+         , su_prev.secondary_activity_category_path AS prev_secondary_activity_category_path
+         , su_prev.sector_path                      AS prev_sector_path
+         , su_prev.legal_form_id                    AS prev_legal_form_id
+         , su_prev.physical_region_path             AS prev_physical_region_path
+         , su_prev.physical_country_id              AS prev_physical_country_id
+         , su_prev.physical_address_part1           AS prev_physical_address_part1
+         , su_prev.physical_address_part2           AS prev_physical_address_part2
+         , su_prev.physical_address_part3           AS prev_physical_address_part3
          --
-         , COALESCE(su_stop.primary_activity_category_path  , su_start.primary_activity_category_path)   AS primary_activity_category_path
-         , COALESCE(su_stop.secondary_activity_category_path, su_start.secondary_activity_category_path) AS secondary_activity_category_path
-         , COALESCE(su_stop.sector_path                     , su_start.sector_path)                      AS sector_path
-         , COALESCE(su_stop.legal_form_id                   , su_start.legal_form_id)                    AS legal_form_id
-         , COALESCE(su_stop.physical_region_path            , su_start.physical_region_path)             AS physical_region_path
-         , COALESCE(su_stop.physical_country_id             , su_start.physical_country_id)              AS physical_country_id
+         , su_curr.name                             AS curr_name
+         , su_curr.primary_activity_category_path   AS curr_primary_activity_category_path
+         , su_curr.secondary_activity_category_path AS curr_secondary_activity_category_path
+         , su_curr.sector_path                      AS curr_sector_path
+         , su_curr.legal_form_id                    AS curr_legal_form_id
+         , su_curr.physical_region_path             AS curr_physical_region_path
+         , su_curr.physical_country_id              AS curr_physical_country_id
+         , su_curr.physical_address_part1           AS curr_physical_address_part1
+         , su_curr.physical_address_part2           AS curr_physical_address_part2
+         , su_curr.physical_address_part3           AS curr_physical_address_part3
          --
-         , su_start.stats AS start_stats
-         , su_stop.stats AS stop_stats
+         , su_prev.stats AS start_stats
+         , su_curr.stats AS stop_stats
          --
-         , COALESCE(su_stop.stats , su_start.stats) AS stats
-         , COALESCE(su_stop.stats_summary , su_start.stats_summary) AS stats_summary
+         , su_curr.stats AS stats
+         , su_curr.stats_summary AS stats_summary
          --
     FROM public.statistical_history_periods AS range
-    LEFT JOIN public.statistical_unit AS su_start
-           ON su_start.valid_from <= range.time_start AND range.time_start <= su_start.valid_to
-    LEFT JOIN public.statistical_unit AS su_stop
-           ON su_stop.valid_from <= range.time_stop AND range.time_stop <= su_stop.valid_to
-    WHERE range.resolution = 'year-month' AND
-        ( su_start.unit_type IS NULL
-       OR su_stop.unit_type IS NULL
-       OR su_start.unit_type = su_stop.unit_type AND su_start.unit_id = su_stop.unit_id
-        )
+    JOIN LATERAL (
+      -- Within a range find the last row of each timeline
+      SELECT *
+      FROM (
+        SELECT su_range.*
+             , ROW_NUMBER() OVER (PARTITION BY su_range.unit_type, su_range.unit_id ORDER BY su_range.valid_from DESC) = 1 AS last_in_range
+        FROM public.statistical_unit AS su_range
+        WHERE daterange(su_range.valid_from, su_range.valid_to, '[]') && daterange(range.curr_start,range.curr_stop,'[]')
+          -- Entries already dead entries are not relevant.
+          AND (su_range.death_date IS NULL OR range.curr_start <= su_range.death_date)
+          -- Entries not yet born are not relevant.
+          AND (su_range.birth_date IS NULL OR su_range.birth_date <= range.curr_stop)
+      ) AS range_units
+      WHERE last_in_range
+    ) AS su_curr ON true
+    LEFT JOIN public.statistical_unit AS su_prev
+      -- There may be a previous entry to compare with.
+      ON su_prev.valid_from <= range.prev_stop AND range.prev_stop <= su_prev.valid_to
+      AND su_prev.unit_type = su_curr.unit_type AND su_prev.unit_id = su_curr.unit_id
+    WHERE range.resolution = 'year-month'
 ), year_and_month_with_unit_derived AS (
     SELECT basis.*
          --
-         , track_changes AND NOT born AND not died AND start_primary_activity_category_path   IS DISTINCT FROM stop_primary_activity_category_path   AS primary_activity_category_changed
-         , track_changes AND NOT born AND not died AND start_secondary_activity_category_path IS DISTINCT FROM stop_secondary_activity_category_path AS secondary_activity_category_changed
-         , track_changes AND NOT born AND not died AND start_sector_path                      IS DISTINCT FROM stop_sector_path                      AS sector_changed
-         , track_changes AND NOT born AND not died AND start_legal_form_id                    IS DISTINCT FROM stop_legal_form_id                    AS legal_form_changed
-         , track_changes AND NOT born AND not died AND start_physical_region_path             IS DISTINCT FROM stop_physical_region_path             AS physical_region_changed
-         , track_changes AND NOT born AND not died AND start_physical_country_id              IS DISTINCT FROM stop_physical_country_id              AS physical_country_changed
+         , track_changes AND NOT born AND not died AND prev_name                             IS DISTINCT FROM curr_name                             AS name_changed
+         , track_changes AND NOT born AND not died AND prev_primary_activity_category_path   IS DISTINCT FROM curr_primary_activity_category_path   AS primary_activity_category_changed
+         , track_changes AND NOT born AND not died AND prev_secondary_activity_category_path IS DISTINCT FROM curr_secondary_activity_category_path AS secondary_activity_category_changed
+         , track_changes AND NOT born AND not died AND prev_sector_path                      IS DISTINCT FROM curr_sector_path                      AS sector_changed
+         , track_changes AND NOT born AND not died AND prev_legal_form_id                    IS DISTINCT FROM curr_legal_form_id                    AS legal_form_changed
+         , track_changes AND NOT born AND not died AND prev_physical_region_path             IS DISTINCT FROM curr_physical_region_path             AS physical_region_changed
+         , track_changes AND NOT born AND not died AND prev_physical_country_id              IS DISTINCT FROM curr_physical_country_id              AS physical_country_changed
+         , track_changes AND NOT born AND not died AND (
+                 prev_physical_address_part1 IS DISTINCT FROM curr_physical_address_part1
+              OR prev_physical_address_part2 IS DISTINCT FROM curr_physical_address_part2
+              OR prev_physical_address_part3 IS DISTINCT FROM curr_physical_address_part3
+         ) AS physical_address_changed
          --
          -- TODO: Track the change in `stats` and put that into `stats_change` using `public.stats_change`.
          --, CASE WHEN track_changes THEN public.stats_change(start_stats,stop_stats) ELSE NULL END AS stats_change
@@ -5432,19 +5470,22 @@ WITH year_with_unit_basis AS (
          , NULL::INTEGER                           AS month
          , source.unit_type                        AS unit_type
          --
-         , COUNT(source.*)                            AS count
+         , COUNT(source.*) FILTER (WHERE NOT source.died) AS count
          --
          , COUNT(source.*) FILTER (WHERE source.born) AS births
          , COUNT(source.*) FILTER (WHERE source.died) AS deaths
          --
+         , COUNT(source.*) FILTER (WHERE source.name_changed)                        AS name_change_count
          , COUNT(source.*) FILTER (WHERE source.primary_activity_category_changed)   AS primary_activity_category_change_count
          , COUNT(source.*) FILTER (WHERE source.secondary_activity_category_changed) AS secondary_activity_category_change_count
          , COUNT(source.*) FILTER (WHERE source.sector_changed)                      AS sector_change_count
          , COUNT(source.*) FILTER (WHERE source.legal_form_changed)                  AS legal_form_change_count
          , COUNT(source.*) FILTER (WHERE source.physical_region_changed)             AS physical_region_change_count
          , COUNT(source.*) FILTER (WHERE source.physical_country_changed)            AS physical_country_change_count
+         , COUNT(source.*) FILTER (WHERE source.physical_address_changed)            AS physical_address_change_count
          --
          , public.jsonb_stats_summary_merge_agg(source.stats_summary) AS stats_summary
+         --
     FROM year_with_unit_derived AS source
     GROUP BY resolution, year, unit_type
 ), year_and_month_with_unit AS (
@@ -5453,19 +5494,22 @@ WITH year_with_unit_basis AS (
          , source.month                            AS month
          , source.unit_type                        AS unit_type
          --
-         , COUNT(source.*)                         AS count
+         , COUNT(source.*) FILTER (WHERE NOT source.died) AS count
          --
          , COUNT(source.*) FILTER (WHERE source.born) AS births
          , COUNT(source.*) FILTER (WHERE source.died) AS deaths
          --
+         , COUNT(source.*) FILTER (WHERE source.name_changed)                        AS name_change_count
          , COUNT(source.*) FILTER (WHERE source.primary_activity_category_changed)   AS primary_activity_category_change_count
          , COUNT(source.*) FILTER (WHERE source.secondary_activity_category_changed) AS secondary_activity_category_change_count
          , COUNT(source.*) FILTER (WHERE source.sector_changed)                      AS sector_change_count
          , COUNT(source.*) FILTER (WHERE source.legal_form_changed)                  AS legal_form_change_count
          , COUNT(source.*) FILTER (WHERE source.physical_region_changed)             AS physical_region_change_count
          , COUNT(source.*) FILTER (WHERE source.physical_country_changed)            AS physical_country_change_count
+         , COUNT(source.*) FILTER (WHERE source.physical_address_changed)            AS physical_address_change_count
          --
          , public.jsonb_stats_summary_merge_agg(source.stats_summary) AS stats_summary
+         --
     FROM year_and_month_with_unit_derived AS source
     GROUP BY resolution, year, month, unit_type
 )
@@ -5522,63 +5566,81 @@ WITH year_with_unit_basis AS (
     SELECT range.resolution AS resolution
          , range.year AS year
          , NULL::INTEGER AS month
-         , COALESCE(su_start.unit_type, su_stop.unit_type) AS unit_type
-         --
-         , COALESCE(su_start.unit_id, su_stop.unit_id) AS unit_id
-         , su_start.unit_id IS NOT NULL AND su_stop.unit_id IS NOT NULL AS track_changes
+         , su_curr.unit_type AS unit_type
          --
-         , COALESCE(su_stop.birth_date, su_start.birth_date) AS birth_date
-         , COALESCE(su_stop.death_date, su_start.death_date) AS death_date
+         , su_curr.unit_id AS unit_id
+         , su_prev.unit_id IS NOT NULL AND su_curr.unit_id IS NOT NULL AS track_changes
          --
-         , COALESCE(range.time_start <= COALESCE(su_stop.birth_date, su_start.birth_date), false) AS born
-         , COALESCE(COALESCE(su_stop.death_date, su_start.death_date) <= range.time_stop, false) AS died
+         , su_curr.birth_date AS birth_date
+         , su_curr.death_date AS death_date
          --
-         , su_start.primary_activity_category_path   AS start_primary_activity_category_path
-         , su_start.secondary_activity_category_path AS start_secondary_activity_category_path
-         , su_start.sector_path                      AS start_sector_path
-         , su_start.legal_form_id                    AS start_legal_form_id
-         , su_start.physical_region_path             AS start_physical_region_path
-         , su_start.physical_country_id              AS start_physical_country_id
+         , COALESCE(range.curr_start <= su_curr.birth_date AND su_curr.birth_date <= range.curr_stop,false) AS born
+         , COALESCE(range.curr_start <= su_curr.death_date AND su_curr.death_date <= range.curr_stop,false) AS died
          --
-         , su_stop.primary_activity_category_path    AS stop_primary_activity_category_path
-         , su_stop.secondary_activity_category_path  AS stop_secondary_activity_category_path
-         , su_stop.sector_path                       AS stop_sector_path
-         , su_stop.legal_form_id                     AS stop_legal_form_id
-         , su_stop.physical_region_path              AS stop_physical_region_path
-         , su_stop.physical_country_id               AS stop_physical_country_id
+         , su_prev.name                             AS prev_name
+         , su_prev.primary_activity_category_path   AS prev_primary_activity_category_path
+         , su_prev.secondary_activity_category_path AS prev_secondary_activity_category_path
+         , su_prev.sector_path                      AS prev_sector_path
+         , su_prev.legal_form_id                    AS prev_legal_form_id
+         , su_prev.physical_region_path             AS prev_physical_region_path
+         , su_prev.physical_country_id              AS prev_physical_country_id
+         , su_prev.physical_address_part1           AS prev_physical_address_part1
+         , su_prev.physical_address_part2           AS prev_physical_address_part2
+         , su_prev.physical_address_part3           AS prev_physical_address_part3
          --
-         , COALESCE(su_stop.primary_activity_category_path  , su_start.primary_activity_category_path)   AS primary_activity_category_path
-         , COALESCE(su_stop.secondary_activity_category_path, su_start.secondary_activity_category_path) AS secondary_activity_category_path
-         , COALESCE(su_stop.sector_path                     , su_start.sector_path)                      AS sector_path
-         , COALESCE(su_stop.legal_form_id                   , su_start.legal_form_id)                    AS legal_form_id
-         , COALESCE(su_stop.physical_region_path            , su_start.physical_region_path)             AS physical_region_path
-         , COALESCE(su_stop.physical_country_id             , su_start.physical_country_id)              AS physical_country_id
+         , su_curr.name                             AS curr_name
+         , su_curr.primary_activity_category_path   AS curr_primary_activity_category_path
+         , su_curr.secondary_activity_category_path AS curr_secondary_activity_category_path
+         , su_curr.sector_path                      AS curr_sector_path
+         , su_curr.legal_form_id                    AS curr_legal_form_id
+         , su_curr.physical_region_path             AS curr_physical_region_path
+         , su_curr.physical_country_id              AS curr_physical_country_id
+         , su_curr.physical_address_part1           AS curr_physical_address_part1
+         , su_curr.physical_address_part2           AS curr_physical_address_part2
+         , su_curr.physical_address_part3           AS curr_physical_address_part3
          --
-         , su_start.stats AS start_stats
-         , su_stop.stats AS stop_stats
+         , su_prev.stats AS prev_stats
+         , su_curr.stats AS curr_stats
          --
-         , COALESCE(su_stop.stats , su_start.stats) AS stats
-         , COALESCE(su_stop.stats_summary , su_start.stats_summary) AS stats_summary
+         , su_curr.stats AS stats
+         , su_curr.stats_summary AS stats_summary
          --
     FROM public.statistical_history_periods AS range
-    LEFT JOIN public.statistical_unit AS su_start
-           ON su_start.valid_from <= range.time_start AND range.time_start <= su_start.valid_to
-    LEFT JOIN public.statistical_unit AS su_stop
-           ON su_stop.valid_from <= range.time_stop AND range.time_stop <= su_stop.valid_to
-    WHERE range.resolution = 'year' AND
-        ( su_start.unit_type IS NULL
-       OR su_stop.unit_type IS NULL
-       OR su_start.unit_type = su_stop.unit_type AND su_start.unit_id = su_stop.unit_id
-        )
+    JOIN LATERAL (
+      -- Within a range find the last row of each timeline
+      SELECT *
+      FROM (
+        SELECT su_range.*
+             , ROW_NUMBER() OVER (PARTITION BY su_range.unit_type, su_range.unit_id ORDER BY su_range.valid_from DESC) = 1 AS last_in_range
+        FROM public.statistical_unit AS su_range
+        WHERE daterange(su_range.valid_from, su_range.valid_to, '[]') && daterange(range.curr_start,range.curr_stop,'[]')
+          -- Entries already dead entries are not relevant.
+          AND (su_range.death_date IS NULL OR range.curr_start <= su_range.death_date)
+          -- Entries not yet born are not relevant.
+          AND (su_range.birth_date IS NULL OR su_range.birth_date <= range.curr_stop)
+      ) AS range_units
+      WHERE last_in_range
+    ) AS su_curr ON true
+    LEFT JOIN public.statistical_unit AS su_prev
+      -- There may be a previous entry to compare with.
+      ON su_prev.valid_from <= range.prev_stop AND range.prev_stop <= su_prev.valid_to
+      AND su_prev.unit_type = su_curr.unit_type AND su_prev.unit_id = su_curr.unit_id
+    WHERE range.resolution = 'year'
 ), year_with_unit_derived AS (
     SELECT basis.*
          --
-         , track_changes AND NOT born AND not died AND start_primary_activity_category_path   IS DISTINCT FROM stop_primary_activity_category_path   AS primary_activity_category_changed
-         , track_changes AND NOT born AND not died AND start_secondary_activity_category_path IS DISTINCT FROM stop_secondary_activity_category_path AS secondary_activity_category_changed
-         , track_changes AND NOT born AND not died AND start_sector_path                      IS DISTINCT FROM stop_sector_path                      AS sector_changed
-         , track_changes AND NOT born AND not died AND start_legal_form_id                    IS DISTINCT FROM stop_legal_form_id                    AS legal_form_changed
-         , track_changes AND NOT born AND not died AND start_physical_region_path             IS DISTINCT FROM stop_physical_region_path             AS physical_region_changed
-         , track_changes AND NOT born AND not died AND start_physical_country_id              IS DISTINCT FROM stop_physical_country_id              AS physical_country_changed
+         , track_changes AND NOT born AND not died AND prev_name                             IS DISTINCT FROM curr_name                             AS name_changed
+         , track_changes AND NOT born AND not died AND prev_primary_activity_category_path   IS DISTINCT FROM curr_primary_activity_category_path   AS primary_activity_category_changed
+         , track_changes AND NOT born AND not died AND prev_secondary_activity_category_path IS DISTINCT FROM curr_secondary_activity_category_path AS secondary_activity_category_changed
+         , track_changes AND NOT born AND not died AND prev_sector_path                      IS DISTINCT FROM curr_sector_path                      AS sector_changed
+         , track_changes AND NOT born AND not died AND prev_legal_form_id                    IS DISTINCT FROM curr_legal_form_id                    AS legal_form_changed
+         , track_changes AND NOT born AND not died AND prev_physical_region_path             IS DISTINCT FROM curr_physical_region_path             AS physical_region_changed
+         , track_changes AND NOT born AND not died AND prev_physical_country_id              IS DISTINCT FROM curr_physical_country_id              AS physical_country_changed
+         , track_changes AND NOT born AND not died AND (
+                 prev_physical_address_part1 IS DISTINCT FROM curr_physical_address_part1
+              OR prev_physical_address_part2 IS DISTINCT FROM curr_physical_address_part2
+              OR prev_physical_address_part3 IS DISTINCT FROM curr_physical_address_part3
+         ) AS physical_address_changed
          --
          -- TODO: Track the change in `stats` and put that into `stats_change` using `public.stats_change`.
          --, CASE WHEN track_changes THEN public.stats_change(start_stats,stop_stats) ELSE NULL END AS stats_change
@@ -5588,63 +5650,81 @@ WITH year_with_unit_basis AS (
     SELECT range.resolution AS resolution
          , range.year AS year
          , range.month AS month
-         , COALESCE(su_start.unit_type, su_stop.unit_type) AS unit_type
+         , COALESCE(su_prev.unit_type, su_curr.unit_type) AS unit_type
          --
-         , COALESCE(su_start.unit_id, su_stop.unit_id) AS unit_id
-         , su_start.unit_id IS NOT NULL AND su_stop.unit_id IS NOT NULL AS track_changes
+         , su_curr.unit_id AS unit_id
+         , su_prev.unit_id IS NOT NULL AND su_curr.unit_id IS NOT NULL AS track_changes
          --
-         , COALESCE(su_stop.birth_date, su_start.birth_date) AS birth_date
-         , COALESCE(su_stop.death_date, su_start.death_date) AS death_date
+         , su_curr.birth_date AS birth_date
+         , su_curr.death_date AS death_date
          --
-         , COALESCE(range.time_start <= COALESCE(su_stop.birth_date, su_start.birth_date), false) AS born
-         , COALESCE(COALESCE(su_stop.death_date, su_start.death_date) <= range.time_stop, false) AS died
+         , COALESCE(range.curr_start <= su_curr.birth_date AND su_curr.birth_date <= range.curr_stop,false) AS born
+         , COALESCE(range.curr_start <= su_curr.death_date AND su_curr.death_date <= range.curr_stop,false) AS died
          --
-         , su_start.primary_activity_category_path   AS start_primary_activity_category_path
-         , su_start.secondary_activity_category_path AS start_secondary_activity_category_path
-         , su_start.sector_path                      AS start_sector_path
-         , su_start.legal_form_id                    AS start_legal_form_id
-         , su_start.physical_region_path             AS start_physical_region_path
-         , su_start.physical_country_id              AS start_physical_country_id
+         , su_prev.name                             AS prev_name
+         , su_prev.primary_activity_category_path   AS prev_primary_activity_category_path
+         , su_prev.secondary_activity_category_path AS prev_secondary_activity_category_path
+         , su_prev.sector_path                      AS prev_sector_path
+         , su_prev.legal_form_id                    AS prev_legal_form_id
+         , su_prev.physical_region_path             AS prev_physical_region_path
+         , su_prev.physical_country_id              AS prev_physical_country_id
+         , su_prev.physical_address_part1           AS prev_physical_address_part1
+         , su_prev.physical_address_part2           AS prev_physical_address_part2
+         , su_prev.physical_address_part3           AS prev_physical_address_part3
          --
-         , su_stop.primary_activity_category_path    AS stop_primary_activity_category_path
-         , su_stop.secondary_activity_category_path  AS stop_secondary_activity_category_path
-         , su_stop.sector_path                       AS stop_sector_path
-         , su_stop.legal_form_id                     AS stop_legal_form_id
-         , su_stop.physical_region_path              AS stop_physical_region_path
-         , su_stop.physical_country_id               AS stop_physical_country_id
+         , su_curr.name                             AS curr_name
+         , su_curr.primary_activity_category_path   AS curr_primary_activity_category_path
+         , su_curr.secondary_activity_category_path AS curr_secondary_activity_category_path
+         , su_curr.sector_path                      AS curr_sector_path
+         , su_curr.legal_form_id                    AS curr_legal_form_id
+         , su_curr.physical_region_path             AS curr_physical_region_path
+         , su_curr.physical_country_id              AS curr_physical_country_id
+         , su_curr.physical_address_part1           AS curr_physical_address_part1
+         , su_curr.physical_address_part2           AS curr_physical_address_part2
+         , su_curr.physical_address_part3           AS curr_physical_address_part3
          --
-         , COALESCE(su_stop.primary_activity_category_path  , su_start.primary_activity_category_path)   AS primary_activity_category_path
-         , COALESCE(su_stop.secondary_activity_category_path, su_start.secondary_activity_category_path) AS secondary_activity_category_path
-         , COALESCE(su_stop.sector_path                     , su_start.sector_path)                      AS sector_path
-         , COALESCE(su_stop.legal_form_id                   , su_start.legal_form_id)                    AS legal_form_id
-         , COALESCE(su_stop.physical_region_path            , su_start.physical_region_path)             AS physical_region_path
-         , COALESCE(su_stop.physical_country_id             , su_start.physical_country_id)              AS physical_country_id
+         , su_prev.stats AS prev_stats
+         , su_curr.stats AS curr_stats
          --
-         , su_start.stats AS start_stats
-         , su_stop.stats AS stop_stats
-         --
-         , COALESCE(su_stop.stats , su_start.stats) AS stats
-         , COALESCE(su_stop.stats_summary , su_start.stats_summary) AS stats_summary
+         , su_curr.stats AS stats
+         , su_curr.stats_summary AS stats_summary
          --
     FROM public.statistical_history_periods AS range
-    LEFT JOIN public.statistical_unit AS su_start
-           ON su_start.valid_from <= range.time_start AND range.time_start <= su_start.valid_to
-    LEFT JOIN public.statistical_unit AS su_stop
-           ON su_stop.valid_from <= range.time_stop AND range.time_stop <= su_stop.valid_to
-    WHERE range.resolution = 'year-month' AND
-        ( su_start.unit_type IS NULL
-       OR su_stop.unit_type IS NULL
-       OR su_start.unit_type = su_stop.unit_type AND su_start.unit_id = su_stop.unit_id
-        )
+    JOIN LATERAL (
+      -- Within a range find the last row of each timeline
+      SELECT *
+      FROM (
+        SELECT su_range.*
+             , ROW_NUMBER() OVER (PARTITION BY su_range.unit_type, su_range.unit_id ORDER BY su_range.valid_from DESC) = 1 AS last_in_range
+        FROM public.statistical_unit AS su_range
+        WHERE daterange(su_range.valid_from, su_range.valid_to, '[]') && daterange(range.curr_start,range.curr_stop,'[]')
+          -- Entries already dead entries are not relevant.
+          AND (su_range.death_date IS NULL OR range.curr_start <= su_range.death_date)
+          -- Entries not yet born are not relevant.
+          AND (su_range.birth_date IS NULL OR su_range.birth_date <= range.curr_stop)
+      ) AS range_units
+      WHERE last_in_range
+    ) AS su_curr ON true
+    LEFT JOIN public.statistical_unit AS su_prev
+      -- There may be a previous entry to compare with.
+      ON su_prev.valid_from <= range.prev_stop AND range.prev_stop <= su_prev.valid_to
+      AND su_prev.unit_type = su_curr.unit_type AND su_prev.unit_id = su_curr.unit_id
+    WHERE range.resolution = 'year-month'
 ), year_and_month_with_unit_derived AS (
     SELECT basis.*
          --
-         , track_changes AND NOT born AND not died AND start_primary_activity_category_path   IS DISTINCT FROM stop_primary_activity_category_path   AS primary_activity_category_changed
-         , track_changes AND NOT born AND not died AND start_secondary_activity_category_path IS DISTINCT FROM stop_secondary_activity_category_path AS secondary_activity_category_changed
-         , track_changes AND NOT born AND not died AND start_sector_path                      IS DISTINCT FROM stop_sector_path                      AS sector_changed
-         , track_changes AND NOT born AND not died AND start_legal_form_id                    IS DISTINCT FROM stop_legal_form_id                    AS legal_form_changed
-         , track_changes AND NOT born AND not died AND start_physical_region_path             IS DISTINCT FROM stop_physical_region_path             AS physical_region_changed
-         , track_changes AND NOT born AND not died AND start_physical_country_id              IS DISTINCT FROM stop_physical_country_id              AS physical_country_changed
+         , track_changes AND NOT born AND not died AND prev_name                             IS DISTINCT FROM curr_name                             AS name_changed
+         , track_changes AND NOT born AND not died AND prev_primary_activity_category_path   IS DISTINCT FROM curr_primary_activity_category_path   AS primary_activity_category_changed
+         , track_changes AND NOT born AND not died AND prev_secondary_activity_category_path IS DISTINCT FROM curr_secondary_activity_category_path AS secondary_activity_category_changed
+         , track_changes AND NOT born AND not died AND prev_sector_path                      IS DISTINCT FROM curr_sector_path                      AS sector_changed
+         , track_changes AND NOT born AND not died AND prev_legal_form_id                    IS DISTINCT FROM curr_legal_form_id                    AS legal_form_changed
+         , track_changes AND NOT born AND not died AND prev_physical_region_path             IS DISTINCT FROM curr_physical_region_path             AS physical_region_changed
+         , track_changes AND NOT born AND not died AND prev_physical_country_id              IS DISTINCT FROM curr_physical_country_id              AS physical_country_changed
+         , track_changes AND NOT born AND not died AND (
+                 prev_physical_address_part1 IS DISTINCT FROM curr_physical_address_part1
+              OR prev_physical_address_part2 IS DISTINCT FROM curr_physical_address_part2
+              OR prev_physical_address_part3 IS DISTINCT FROM curr_physical_address_part3
+         ) AS physical_address_changed
          --
          -- TODO: Track the change in `stats` and put that into `stats_change` using `public.stats_change`.
          --, CASE WHEN track_changes THEN stop_stats - start_stats ELSE NULL END AS stats_change
@@ -5656,24 +5736,26 @@ WITH year_with_unit_basis AS (
          , NULL::INTEGER                           AS month
          , source.unit_type                        AS unit_type
          --
-         , source.primary_activity_category_path   AS primary_activity_category_path
-         , source.secondary_activity_category_path AS secondary_activity_category_path
-         , source.sector_path                      AS sector_path
-         , source.legal_form_id                    AS legal_form_id
-         , source.physical_region_path             AS physical_region_path
-         , source.physical_country_id              AS physical_country_id
+         , source.curr_primary_activity_category_path   AS primary_activity_category_path
+         , source.curr_secondary_activity_category_path AS secondary_activity_category_path
+         , source.curr_sector_path                      AS sector_path
+         , source.curr_legal_form_id                    AS legal_form_id
+         , source.curr_physical_region_path             AS physical_region_path
+         , source.curr_physical_country_id              AS physical_country_id
          --
-         , COUNT(source.*)                         AS count
+         , COUNT(source.*) FILTER (WHERE NOT source.died) AS count
          --
          , COUNT(source.*) FILTER (WHERE source.born) AS births
          , COUNT(source.*) FILTER (WHERE source.died) AS deaths
          --
+         , COUNT(source.*) FILTER (WHERE source.name_changed)                        AS name_change_count
          , COUNT(source.*) FILTER (WHERE source.primary_activity_category_changed)   AS primary_activity_category_change_count
          , COUNT(source.*) FILTER (WHERE source.secondary_activity_category_changed) AS secondary_activity_category_change_count
          , COUNT(source.*) FILTER (WHERE source.sector_changed)                      AS sector_change_count
          , COUNT(source.*) FILTER (WHERE source.legal_form_changed)                  AS legal_form_change_count
          , COUNT(source.*) FILTER (WHERE source.physical_region_changed)             AS physical_region_change_count
          , COUNT(source.*) FILTER (WHERE source.physical_country_changed)            AS physical_country_change_count
+         , COUNT(source.*) FILTER (WHERE source.physical_address_changed)            AS physical_address_change_count
          --
          , public.jsonb_stats_summary_merge_agg(source.stats_summary) AS stats_summary
     FROM year_with_unit_derived AS source
@@ -5690,24 +5772,26 @@ WITH year_with_unit_basis AS (
          , source.month                            AS month
          , source.unit_type                        AS unit_type
          --
-         , source.primary_activity_category_path   AS primary_activity_category_path
-         , source.secondary_activity_category_path AS secondary_activity_category_path
-         , source.sector_path                      AS sector_path
-         , source.legal_form_id                    AS legal_form_id
-         , source.physical_region_path             AS physical_region_path
-         , source.physical_country_id              AS physical_country_id
+         , source.curr_primary_activity_category_path   AS primary_activity_category_path
+         , source.curr_secondary_activity_category_path AS secondary_activity_category_path
+         , source.curr_sector_path                      AS sector_path
+         , source.curr_legal_form_id                    AS legal_form_id
+         , source.curr_physical_region_path             AS physical_region_path
+         , source.curr_physical_country_id              AS physical_country_id
          --
-         , COUNT(source.*)                         AS count
+         , COUNT(source.*) FILTER (WHERE NOT source.died) AS count
          --
          , COUNT(source.*) FILTER (WHERE source.born) AS births
          , COUNT(source.*) FILTER (WHERE source.died) AS deaths
          --
+         , COUNT(source.*) FILTER (WHERE source.name_changed)                        AS name_change_count
          , COUNT(source.*) FILTER (WHERE source.primary_activity_category_changed)   AS primary_activity_category_change_count
          , COUNT(source.*) FILTER (WHERE source.secondary_activity_category_changed) AS secondary_activity_category_change_count
          , COUNT(source.*) FILTER (WHERE source.sector_changed)                      AS sector_change_count
          , COUNT(source.*) FILTER (WHERE source.legal_form_changed)                  AS legal_form_change_count
          , COUNT(source.*) FILTER (WHERE source.physical_region_changed)             AS physical_region_change_count
          , COUNT(source.*) FILTER (WHERE source.physical_country_changed)            AS physical_country_change_count
+         , COUNT(source.*) FILTER (WHERE source.physical_address_changed)            AS physical_address_change_count
          --
          , public.jsonb_stats_summary_merge_agg(source.stats_summary) AS stats_summary
     FROM year_and_month_with_unit_derived AS source
diff --git a/test/data/40_legal-units-sector-change-middle-of-month.csv b/test/data/40_legal-units-sector-change-middle-of-month.csv
new file mode 100644
index 000000000..fa5e0435a
--- /dev/null
+++ b/test/data/40_legal-units-sector-change-middle-of-month.csv
@@ -0,0 +1,3 @@
+valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code
+2010-01-01,2011-01-14,823573673,Kranløft Vestland,2010-01-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2011-01-15,infinity,823573673,Kranløft Vestland,2010-01-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,8200,AS
diff --git a/test/data/40_legal-units-sector-change-start-of-second-month.csv b/test/data/40_legal-units-sector-change-start-of-second-month.csv
new file mode 100644
index 000000000..b7c8caeb1
--- /dev/null
+++ b/test/data/40_legal-units-sector-change-start-of-second-month.csv
@@ -0,0 +1,3 @@
+valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code
+2010-01-01,2011-01-31,823573673,Kranløft Vestland,2010-01-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2011-02-01,infinity,823573673,Kranløft Vestland,2010-01-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,8200,AS
diff --git a/test/data/40_legal-units-sector-change-start-of-year.csv b/test/data/40_legal-units-sector-change-start-of-year.csv
new file mode 100644
index 000000000..6d8d44a21
--- /dev/null
+++ b/test/data/40_legal-units-sector-change-start-of-year.csv
@@ -0,0 +1,4 @@
+valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code
+2010-01-01,2010-12-31,823573673,Kranløft Vestland,2010-01-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2011-01-01,2011-12-31,823573673,Kranløft Vestland,2010-01-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,7000,AS
+2012-01-01,infinity,823573673,Kranløft Vestland,2010-01-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,8200,AS
diff --git a/test/data/41_legal-units-births-middle-of-month.csv b/test/data/41_legal-units-births-middle-of-month.csv
new file mode 100644
index 000000000..1b0301969
--- /dev/null
+++ b/test/data/41_legal-units-births-middle-of-month.csv
@@ -0,0 +1,5 @@
+valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code
+2010-01-15,2010-12-31,823573673,Kranløft Vestland,2010-01-15,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2011-01-01,2012-01-14,823573673,Kranløft Vestland,2010-01-15,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2012-01-15,infinity,823573673,Kranløft Vestland,2010-01-15,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2011-01-15,infinity,921835809,Kranløft Østland,2011-01-15,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
diff --git a/test/data/41_legal-units-births-start-of-second-month.csv b/test/data/41_legal-units-births-start-of-second-month.csv
new file mode 100644
index 000000000..02bd0193d
--- /dev/null
+++ b/test/data/41_legal-units-births-start-of-second-month.csv
@@ -0,0 +1,5 @@
+valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code
+2010-02-01,2010-12-31,823573673,Kranløft Vestland,2010-02-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2011-01-01,2012-01-14,823573673,Kranløft Vestland,2010-02-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2012-01-15,infinity,823573673,Kranløft Vestland,2010-02-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2011-02-01,infinity,921835809,Kranløft Østland,2011-02-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
diff --git a/test/data/41_legal-units-births-start-of-year.csv b/test/data/41_legal-units-births-start-of-year.csv
new file mode 100644
index 000000000..12523ec0f
--- /dev/null
+++ b/test/data/41_legal-units-births-start-of-year.csv
@@ -0,0 +1,5 @@
+valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code
+2010-01-01,2010-12-31,823573673,Kranløft Vestland,2010-01-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2011-01-01,2012-01-14,823573673,Kranløft Vestland,2010-01-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2012-01-15,infinity,823573673,Kranløft Vestland,2010-01-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2011-01-01,infinity,921835809,Kranløft Østland,2011-01-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
diff --git a/test/data/42_legal-units-deaths-end-of-first-month.csv b/test/data/42_legal-units-deaths-end-of-first-month.csv
new file mode 100644
index 000000000..091a1d485
--- /dev/null
+++ b/test/data/42_legal-units-deaths-end-of-first-month.csv
@@ -0,0 +1,4 @@
+valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code
+2010-01-01,2012-12-31,823573673,Kranløft Vestland,2010-01-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2012-12-31,2012-12-31,823573673,Kranløft Vestland,2010-01-01,2012-12-31,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2010-01-01,2011-01-31,921835809,Kranløft Østland,2010-01-01,2011-01-31,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
diff --git a/test/data/42_legal-units-deaths-end-of-year.csv b/test/data/42_legal-units-deaths-end-of-year.csv
new file mode 100644
index 000000000..f066666ec
--- /dev/null
+++ b/test/data/42_legal-units-deaths-end-of-year.csv
@@ -0,0 +1,5 @@
+valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code
+2010-01-01,2012-12-30,823573673,Kranløft Vestland,2010-01-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2012-12-31,2012-12-31,823573673,Kranløft Vestland,2010-01-01,2012-12-31,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2010-01-01,2011-12-30,921835809,Kranløft Østland,2010-01-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2011-12-31,2011-12-31,921835809,Kranløft Østland,2010-01-01,2011-12-31,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
diff --git a/test/data/42_legal-units-deaths-start-of-month.csv b/test/data/42_legal-units-deaths-start-of-month.csv
new file mode 100644
index 000000000..6fa19aadf
--- /dev/null
+++ b/test/data/42_legal-units-deaths-start-of-month.csv
@@ -0,0 +1,4 @@
+valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code
+2010-01-01,2011-12-31,823573673,Kranløft Vestland,2010-01-01,,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2012-01-01,2012-01-01,823573673,Kranløft Vestland,2010-01-01,2012-01-01,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
+2010-01-01,2011-01-01,921835809,Kranløft Østland,2010-01-01,2011-01-01,Vestlyvegen 219,4347,LYE,1121,NO,,,,,,49.410,,2100,AS
diff --git a/test/expected/03_load_and_verify_history_functions.out b/test/expected/03_load_and_verify_history_functions.out
index 0a55386e4..78f8407d4 100644
--- a/test/expected/03_load_and_verify_history_functions.out
+++ b/test/expected/03_load_and_verify_history_functions.out
@@ -102,190 +102,190 @@ SELECT view_name FROM statistical_unit_refresh_now();
 SELECT * FROM public.statistical_history_periods
 -- Only list previous years, so the test is stable over time.
 WHERE year <= 2023;
- resolution | year | month | time_start | time_stop  
-------------+------+-------+------------+------------
- year       | 2010 |       | 2010-01-01 | 2010-12-31
- year       | 2011 |       | 2011-01-01 | 2011-12-31
- year       | 2012 |       | 2012-01-01 | 2012-12-31
- year       | 2013 |       | 2013-01-01 | 2013-12-31
- year       | 2014 |       | 2014-01-01 | 2014-12-31
- year       | 2015 |       | 2015-01-01 | 2015-12-31
- year       | 2016 |       | 2016-01-01 | 2016-12-31
- year       | 2017 |       | 2017-01-01 | 2017-12-31
- year       | 2018 |       | 2018-01-01 | 2018-12-31
- year       | 2019 |       | 2019-01-01 | 2019-12-31
- year       | 2020 |       | 2020-01-01 | 2020-12-31
- year       | 2021 |       | 2021-01-01 | 2021-12-31
- year       | 2022 |       | 2022-01-01 | 2022-12-31
- year       | 2023 |       | 2023-01-01 | 2023-12-31
- year-month | 2010 |     1 | 2010-01-01 | 2010-01-31
- year-month | 2010 |     2 | 2010-02-01 | 2010-02-28
- year-month | 2010 |     3 | 2010-03-01 | 2010-03-31
- year-month | 2010 |     4 | 2010-04-01 | 2010-04-30
- year-month | 2010 |     5 | 2010-05-01 | 2010-05-31
- year-month | 2010 |     6 | 2010-06-01 | 2010-06-30
- year-month | 2010 |     7 | 2010-07-01 | 2010-07-31
- year-month | 2010 |     8 | 2010-08-01 | 2010-08-31
- year-month | 2010 |     9 | 2010-09-01 | 2010-09-30
- year-month | 2010 |    10 | 2010-10-01 | 2010-10-31
- year-month | 2010 |    11 | 2010-11-01 | 2010-11-30
- year-month | 2010 |    12 | 2010-12-01 | 2010-12-31
- year-month | 2011 |     1 | 2011-01-01 | 2011-01-31
- year-month | 2011 |     2 | 2011-02-01 | 2011-02-28
- year-month | 2011 |     3 | 2011-03-01 | 2011-03-31
- year-month | 2011 |     4 | 2011-04-01 | 2011-04-30
- year-month | 2011 |     5 | 2011-05-01 | 2011-05-31
- year-month | 2011 |     6 | 2011-06-01 | 2011-06-30
- year-month | 2011 |     7 | 2011-07-01 | 2011-07-31
- year-month | 2011 |     8 | 2011-08-01 | 2011-08-31
- year-month | 2011 |     9 | 2011-09-01 | 2011-09-30
- year-month | 2011 |    10 | 2011-10-01 | 2011-10-31
- year-month | 2011 |    11 | 2011-11-01 | 2011-11-30
- year-month | 2011 |    12 | 2011-12-01 | 2011-12-31
- year-month | 2012 |     1 | 2012-01-01 | 2012-01-31
- year-month | 2012 |     2 | 2012-02-01 | 2012-02-29
- year-month | 2012 |     3 | 2012-03-01 | 2012-03-31
- year-month | 2012 |     4 | 2012-04-01 | 2012-04-30
- year-month | 2012 |     5 | 2012-05-01 | 2012-05-31
- year-month | 2012 |     6 | 2012-06-01 | 2012-06-30
- year-month | 2012 |     7 | 2012-07-01 | 2012-07-31
- year-month | 2012 |     8 | 2012-08-01 | 2012-08-31
- year-month | 2012 |     9 | 2012-09-01 | 2012-09-30
- year-month | 2012 |    10 | 2012-10-01 | 2012-10-31
- year-month | 2012 |    11 | 2012-11-01 | 2012-11-30
- year-month | 2012 |    12 | 2012-12-01 | 2012-12-31
- year-month | 2013 |     1 | 2013-01-01 | 2013-01-31
- year-month | 2013 |     2 | 2013-02-01 | 2013-02-28
- year-month | 2013 |     3 | 2013-03-01 | 2013-03-31
- year-month | 2013 |     4 | 2013-04-01 | 2013-04-30
- year-month | 2013 |     5 | 2013-05-01 | 2013-05-31
- year-month | 2013 |     6 | 2013-06-01 | 2013-06-30
- year-month | 2013 |     7 | 2013-07-01 | 2013-07-31
- year-month | 2013 |     8 | 2013-08-01 | 2013-08-31
- year-month | 2013 |     9 | 2013-09-01 | 2013-09-30
- year-month | 2013 |    10 | 2013-10-01 | 2013-10-31
- year-month | 2013 |    11 | 2013-11-01 | 2013-11-30
- year-month | 2013 |    12 | 2013-12-01 | 2013-12-31
- year-month | 2014 |     1 | 2014-01-01 | 2014-01-31
- year-month | 2014 |     2 | 2014-02-01 | 2014-02-28
- year-month | 2014 |     3 | 2014-03-01 | 2014-03-31
- year-month | 2014 |     4 | 2014-04-01 | 2014-04-30
- year-month | 2014 |     5 | 2014-05-01 | 2014-05-31
- year-month | 2014 |     6 | 2014-06-01 | 2014-06-30
- year-month | 2014 |     7 | 2014-07-01 | 2014-07-31
- year-month | 2014 |     8 | 2014-08-01 | 2014-08-31
- year-month | 2014 |     9 | 2014-09-01 | 2014-09-30
- year-month | 2014 |    10 | 2014-10-01 | 2014-10-31
- year-month | 2014 |    11 | 2014-11-01 | 2014-11-30
- year-month | 2014 |    12 | 2014-12-01 | 2014-12-31
- year-month | 2015 |     1 | 2015-01-01 | 2015-01-31
- year-month | 2015 |     2 | 2015-02-01 | 2015-02-28
- year-month | 2015 |     3 | 2015-03-01 | 2015-03-31
- year-month | 2015 |     4 | 2015-04-01 | 2015-04-30
- year-month | 2015 |     5 | 2015-05-01 | 2015-05-31
- year-month | 2015 |     6 | 2015-06-01 | 2015-06-30
- year-month | 2015 |     7 | 2015-07-01 | 2015-07-31
- year-month | 2015 |     8 | 2015-08-01 | 2015-08-31
- year-month | 2015 |     9 | 2015-09-01 | 2015-09-30
- year-month | 2015 |    10 | 2015-10-01 | 2015-10-31
- year-month | 2015 |    11 | 2015-11-01 | 2015-11-30
- year-month | 2015 |    12 | 2015-12-01 | 2015-12-31
- year-month | 2016 |     1 | 2016-01-01 | 2016-01-31
- year-month | 2016 |     2 | 2016-02-01 | 2016-02-29
- year-month | 2016 |     3 | 2016-03-01 | 2016-03-31
- year-month | 2016 |     4 | 2016-04-01 | 2016-04-30
- year-month | 2016 |     5 | 2016-05-01 | 2016-05-31
- year-month | 2016 |     6 | 2016-06-01 | 2016-06-30
- year-month | 2016 |     7 | 2016-07-01 | 2016-07-31
- year-month | 2016 |     8 | 2016-08-01 | 2016-08-31
- year-month | 2016 |     9 | 2016-09-01 | 2016-09-30
- year-month | 2016 |    10 | 2016-10-01 | 2016-10-31
- year-month | 2016 |    11 | 2016-11-01 | 2016-11-30
- year-month | 2016 |    12 | 2016-12-01 | 2016-12-31
- year-month | 2017 |     1 | 2017-01-01 | 2017-01-31
- year-month | 2017 |     2 | 2017-02-01 | 2017-02-28
- year-month | 2017 |     3 | 2017-03-01 | 2017-03-31
- year-month | 2017 |     4 | 2017-04-01 | 2017-04-30
- year-month | 2017 |     5 | 2017-05-01 | 2017-05-31
- year-month | 2017 |     6 | 2017-06-01 | 2017-06-30
- year-month | 2017 |     7 | 2017-07-01 | 2017-07-31
- year-month | 2017 |     8 | 2017-08-01 | 2017-08-31
- year-month | 2017 |     9 | 2017-09-01 | 2017-09-30
- year-month | 2017 |    10 | 2017-10-01 | 2017-10-31
- year-month | 2017 |    11 | 2017-11-01 | 2017-11-30
- year-month | 2017 |    12 | 2017-12-01 | 2017-12-31
- year-month | 2018 |     1 | 2018-01-01 | 2018-01-31
- year-month | 2018 |     2 | 2018-02-01 | 2018-02-28
- year-month | 2018 |     3 | 2018-03-01 | 2018-03-31
- year-month | 2018 |     4 | 2018-04-01 | 2018-04-30
- year-month | 2018 |     5 | 2018-05-01 | 2018-05-31
- year-month | 2018 |     6 | 2018-06-01 | 2018-06-30
- year-month | 2018 |     7 | 2018-07-01 | 2018-07-31
- year-month | 2018 |     8 | 2018-08-01 | 2018-08-31
- year-month | 2018 |     9 | 2018-09-01 | 2018-09-30
- year-month | 2018 |    10 | 2018-10-01 | 2018-10-31
- year-month | 2018 |    11 | 2018-11-01 | 2018-11-30
- year-month | 2018 |    12 | 2018-12-01 | 2018-12-31
- year-month | 2019 |     1 | 2019-01-01 | 2019-01-31
- year-month | 2019 |     2 | 2019-02-01 | 2019-02-28
- year-month | 2019 |     3 | 2019-03-01 | 2019-03-31
- year-month | 2019 |     4 | 2019-04-01 | 2019-04-30
- year-month | 2019 |     5 | 2019-05-01 | 2019-05-31
- year-month | 2019 |     6 | 2019-06-01 | 2019-06-30
- year-month | 2019 |     7 | 2019-07-01 | 2019-07-31
- year-month | 2019 |     8 | 2019-08-01 | 2019-08-31
- year-month | 2019 |     9 | 2019-09-01 | 2019-09-30
- year-month | 2019 |    10 | 2019-10-01 | 2019-10-31
- year-month | 2019 |    11 | 2019-11-01 | 2019-11-30
- year-month | 2019 |    12 | 2019-12-01 | 2019-12-31
- year-month | 2020 |     1 | 2020-01-01 | 2020-01-31
- year-month | 2020 |     2 | 2020-02-01 | 2020-02-29
- year-month | 2020 |     3 | 2020-03-01 | 2020-03-31
- year-month | 2020 |     4 | 2020-04-01 | 2020-04-30
- year-month | 2020 |     5 | 2020-05-01 | 2020-05-31
- year-month | 2020 |     6 | 2020-06-01 | 2020-06-30
- year-month | 2020 |     7 | 2020-07-01 | 2020-07-31
- year-month | 2020 |     8 | 2020-08-01 | 2020-08-31
- year-month | 2020 |     9 | 2020-09-01 | 2020-09-30
- year-month | 2020 |    10 | 2020-10-01 | 2020-10-31
- year-month | 2020 |    11 | 2020-11-01 | 2020-11-30
- year-month | 2020 |    12 | 2020-12-01 | 2020-12-31
- year-month | 2021 |     1 | 2021-01-01 | 2021-01-31
- year-month | 2021 |     2 | 2021-02-01 | 2021-02-28
- year-month | 2021 |     3 | 2021-03-01 | 2021-03-31
- year-month | 2021 |     4 | 2021-04-01 | 2021-04-30
- year-month | 2021 |     5 | 2021-05-01 | 2021-05-31
- year-month | 2021 |     6 | 2021-06-01 | 2021-06-30
- year-month | 2021 |     7 | 2021-07-01 | 2021-07-31
- year-month | 2021 |     8 | 2021-08-01 | 2021-08-31
- year-month | 2021 |     9 | 2021-09-01 | 2021-09-30
- year-month | 2021 |    10 | 2021-10-01 | 2021-10-31
- year-month | 2021 |    11 | 2021-11-01 | 2021-11-30
- year-month | 2021 |    12 | 2021-12-01 | 2021-12-31
- year-month | 2022 |     1 | 2022-01-01 | 2022-01-31
- year-month | 2022 |     2 | 2022-02-01 | 2022-02-28
- year-month | 2022 |     3 | 2022-03-01 | 2022-03-31
- year-month | 2022 |     4 | 2022-04-01 | 2022-04-30
- year-month | 2022 |     5 | 2022-05-01 | 2022-05-31
- year-month | 2022 |     6 | 2022-06-01 | 2022-06-30
- year-month | 2022 |     7 | 2022-07-01 | 2022-07-31
- year-month | 2022 |     8 | 2022-08-01 | 2022-08-31
- year-month | 2022 |     9 | 2022-09-01 | 2022-09-30
- year-month | 2022 |    10 | 2022-10-01 | 2022-10-31
- year-month | 2022 |    11 | 2022-11-01 | 2022-11-30
- year-month | 2022 |    12 | 2022-12-01 | 2022-12-31
- year-month | 2023 |     1 | 2023-01-01 | 2023-01-31
- year-month | 2023 |     2 | 2023-02-01 | 2023-02-28
- year-month | 2023 |     3 | 2023-03-01 | 2023-03-31
- year-month | 2023 |     4 | 2023-04-01 | 2023-04-30
- year-month | 2023 |     5 | 2023-05-01 | 2023-05-31
- year-month | 2023 |     6 | 2023-06-01 | 2023-06-30
- year-month | 2023 |     7 | 2023-07-01 | 2023-07-31
- year-month | 2023 |     8 | 2023-08-01 | 2023-08-31
- year-month | 2023 |     9 | 2023-09-01 | 2023-09-30
- year-month | 2023 |    10 | 2023-10-01 | 2023-10-31
- year-month | 2023 |    11 | 2023-11-01 | 2023-11-30
- year-month | 2023 |    12 | 2023-12-01 | 2023-12-31
+ resolution | year | month | prev_stop  | curr_start | curr_stop  
+------------+------+-------+------------+------------+------------
+ year       | 2010 |       | 2009-12-31 | 2010-01-01 | 2010-12-31
+ year       | 2011 |       | 2010-12-31 | 2011-01-01 | 2011-12-31
+ year       | 2012 |       | 2011-12-31 | 2012-01-01 | 2012-12-31
+ year       | 2013 |       | 2012-12-31 | 2013-01-01 | 2013-12-31
+ year       | 2014 |       | 2013-12-31 | 2014-01-01 | 2014-12-31
+ year       | 2015 |       | 2014-12-31 | 2015-01-01 | 2015-12-31
+ year       | 2016 |       | 2015-12-31 | 2016-01-01 | 2016-12-31
+ year       | 2017 |       | 2016-12-31 | 2017-01-01 | 2017-12-31
+ year       | 2018 |       | 2017-12-31 | 2018-01-01 | 2018-12-31
+ year       | 2019 |       | 2018-12-31 | 2019-01-01 | 2019-12-31
+ year       | 2020 |       | 2019-12-31 | 2020-01-01 | 2020-12-31
+ year       | 2021 |       | 2020-12-31 | 2021-01-01 | 2021-12-31
+ year       | 2022 |       | 2021-12-31 | 2022-01-01 | 2022-12-31
+ year       | 2023 |       | 2022-12-31 | 2023-01-01 | 2023-12-31
+ year-month | 2010 |     1 | 2009-12-31 | 2010-01-01 | 2010-01-31
+ year-month | 2010 |     2 | 2010-01-31 | 2010-02-01 | 2010-02-28
+ year-month | 2010 |     3 | 2010-02-28 | 2010-03-01 | 2010-03-31
+ year-month | 2010 |     4 | 2010-03-31 | 2010-04-01 | 2010-04-30
+ year-month | 2010 |     5 | 2010-04-30 | 2010-05-01 | 2010-05-31
+ year-month | 2010 |     6 | 2010-05-31 | 2010-06-01 | 2010-06-30
+ year-month | 2010 |     7 | 2010-06-30 | 2010-07-01 | 2010-07-31
+ year-month | 2010 |     8 | 2010-07-31 | 2010-08-01 | 2010-08-31
+ year-month | 2010 |     9 | 2010-08-31 | 2010-09-01 | 2010-09-30
+ year-month | 2010 |    10 | 2010-09-30 | 2010-10-01 | 2010-10-31
+ year-month | 2010 |    11 | 2010-10-31 | 2010-11-01 | 2010-11-30
+ year-month | 2010 |    12 | 2010-11-30 | 2010-12-01 | 2010-12-31
+ year-month | 2011 |     1 | 2010-12-31 | 2011-01-01 | 2011-01-31
+ year-month | 2011 |     2 | 2011-01-31 | 2011-02-01 | 2011-02-28
+ year-month | 2011 |     3 | 2011-02-28 | 2011-03-01 | 2011-03-31
+ year-month | 2011 |     4 | 2011-03-31 | 2011-04-01 | 2011-04-30
+ year-month | 2011 |     5 | 2011-04-30 | 2011-05-01 | 2011-05-31
+ year-month | 2011 |     6 | 2011-05-31 | 2011-06-01 | 2011-06-30
+ year-month | 2011 |     7 | 2011-06-30 | 2011-07-01 | 2011-07-31
+ year-month | 2011 |     8 | 2011-07-31 | 2011-08-01 | 2011-08-31
+ year-month | 2011 |     9 | 2011-08-31 | 2011-09-01 | 2011-09-30
+ year-month | 2011 |    10 | 2011-09-30 | 2011-10-01 | 2011-10-31
+ year-month | 2011 |    11 | 2011-10-31 | 2011-11-01 | 2011-11-30
+ year-month | 2011 |    12 | 2011-11-30 | 2011-12-01 | 2011-12-31
+ year-month | 2012 |     1 | 2011-12-31 | 2012-01-01 | 2012-01-31
+ year-month | 2012 |     2 | 2012-01-31 | 2012-02-01 | 2012-02-29
+ year-month | 2012 |     3 | 2012-02-29 | 2012-03-01 | 2012-03-31
+ year-month | 2012 |     4 | 2012-03-31 | 2012-04-01 | 2012-04-30
+ year-month | 2012 |     5 | 2012-04-30 | 2012-05-01 | 2012-05-31
+ year-month | 2012 |     6 | 2012-05-31 | 2012-06-01 | 2012-06-30
+ year-month | 2012 |     7 | 2012-06-30 | 2012-07-01 | 2012-07-31
+ year-month | 2012 |     8 | 2012-07-31 | 2012-08-01 | 2012-08-31
+ year-month | 2012 |     9 | 2012-08-31 | 2012-09-01 | 2012-09-30
+ year-month | 2012 |    10 | 2012-09-30 | 2012-10-01 | 2012-10-31
+ year-month | 2012 |    11 | 2012-10-31 | 2012-11-01 | 2012-11-30
+ year-month | 2012 |    12 | 2012-11-30 | 2012-12-01 | 2012-12-31
+ year-month | 2013 |     1 | 2012-12-31 | 2013-01-01 | 2013-01-31
+ year-month | 2013 |     2 | 2013-01-31 | 2013-02-01 | 2013-02-28
+ year-month | 2013 |     3 | 2013-02-28 | 2013-03-01 | 2013-03-31
+ year-month | 2013 |     4 | 2013-03-31 | 2013-04-01 | 2013-04-30
+ year-month | 2013 |     5 | 2013-04-30 | 2013-05-01 | 2013-05-31
+ year-month | 2013 |     6 | 2013-05-31 | 2013-06-01 | 2013-06-30
+ year-month | 2013 |     7 | 2013-06-30 | 2013-07-01 | 2013-07-31
+ year-month | 2013 |     8 | 2013-07-31 | 2013-08-01 | 2013-08-31
+ year-month | 2013 |     9 | 2013-08-31 | 2013-09-01 | 2013-09-30
+ year-month | 2013 |    10 | 2013-09-30 | 2013-10-01 | 2013-10-31
+ year-month | 2013 |    11 | 2013-10-31 | 2013-11-01 | 2013-11-30
+ year-month | 2013 |    12 | 2013-11-30 | 2013-12-01 | 2013-12-31
+ year-month | 2014 |     1 | 2013-12-31 | 2014-01-01 | 2014-01-31
+ year-month | 2014 |     2 | 2014-01-31 | 2014-02-01 | 2014-02-28
+ year-month | 2014 |     3 | 2014-02-28 | 2014-03-01 | 2014-03-31
+ year-month | 2014 |     4 | 2014-03-31 | 2014-04-01 | 2014-04-30
+ year-month | 2014 |     5 | 2014-04-30 | 2014-05-01 | 2014-05-31
+ year-month | 2014 |     6 | 2014-05-31 | 2014-06-01 | 2014-06-30
+ year-month | 2014 |     7 | 2014-06-30 | 2014-07-01 | 2014-07-31
+ year-month | 2014 |     8 | 2014-07-31 | 2014-08-01 | 2014-08-31
+ year-month | 2014 |     9 | 2014-08-31 | 2014-09-01 | 2014-09-30
+ year-month | 2014 |    10 | 2014-09-30 | 2014-10-01 | 2014-10-31
+ year-month | 2014 |    11 | 2014-10-31 | 2014-11-01 | 2014-11-30
+ year-month | 2014 |    12 | 2014-11-30 | 2014-12-01 | 2014-12-31
+ year-month | 2015 |     1 | 2014-12-31 | 2015-01-01 | 2015-01-31
+ year-month | 2015 |     2 | 2015-01-31 | 2015-02-01 | 2015-02-28
+ year-month | 2015 |     3 | 2015-02-28 | 2015-03-01 | 2015-03-31
+ year-month | 2015 |     4 | 2015-03-31 | 2015-04-01 | 2015-04-30
+ year-month | 2015 |     5 | 2015-04-30 | 2015-05-01 | 2015-05-31
+ year-month | 2015 |     6 | 2015-05-31 | 2015-06-01 | 2015-06-30
+ year-month | 2015 |     7 | 2015-06-30 | 2015-07-01 | 2015-07-31
+ year-month | 2015 |     8 | 2015-07-31 | 2015-08-01 | 2015-08-31
+ year-month | 2015 |     9 | 2015-08-31 | 2015-09-01 | 2015-09-30
+ year-month | 2015 |    10 | 2015-09-30 | 2015-10-01 | 2015-10-31
+ year-month | 2015 |    11 | 2015-10-31 | 2015-11-01 | 2015-11-30
+ year-month | 2015 |    12 | 2015-11-30 | 2015-12-01 | 2015-12-31
+ year-month | 2016 |     1 | 2015-12-31 | 2016-01-01 | 2016-01-31
+ year-month | 2016 |     2 | 2016-01-31 | 2016-02-01 | 2016-02-29
+ year-month | 2016 |     3 | 2016-02-29 | 2016-03-01 | 2016-03-31
+ year-month | 2016 |     4 | 2016-03-31 | 2016-04-01 | 2016-04-30
+ year-month | 2016 |     5 | 2016-04-30 | 2016-05-01 | 2016-05-31
+ year-month | 2016 |     6 | 2016-05-31 | 2016-06-01 | 2016-06-30
+ year-month | 2016 |     7 | 2016-06-30 | 2016-07-01 | 2016-07-31
+ year-month | 2016 |     8 | 2016-07-31 | 2016-08-01 | 2016-08-31
+ year-month | 2016 |     9 | 2016-08-31 | 2016-09-01 | 2016-09-30
+ year-month | 2016 |    10 | 2016-09-30 | 2016-10-01 | 2016-10-31
+ year-month | 2016 |    11 | 2016-10-31 | 2016-11-01 | 2016-11-30
+ year-month | 2016 |    12 | 2016-11-30 | 2016-12-01 | 2016-12-31
+ year-month | 2017 |     1 | 2016-12-31 | 2017-01-01 | 2017-01-31
+ year-month | 2017 |     2 | 2017-01-31 | 2017-02-01 | 2017-02-28
+ year-month | 2017 |     3 | 2017-02-28 | 2017-03-01 | 2017-03-31
+ year-month | 2017 |     4 | 2017-03-31 | 2017-04-01 | 2017-04-30
+ year-month | 2017 |     5 | 2017-04-30 | 2017-05-01 | 2017-05-31
+ year-month | 2017 |     6 | 2017-05-31 | 2017-06-01 | 2017-06-30
+ year-month | 2017 |     7 | 2017-06-30 | 2017-07-01 | 2017-07-31
+ year-month | 2017 |     8 | 2017-07-31 | 2017-08-01 | 2017-08-31
+ year-month | 2017 |     9 | 2017-08-31 | 2017-09-01 | 2017-09-30
+ year-month | 2017 |    10 | 2017-09-30 | 2017-10-01 | 2017-10-31
+ year-month | 2017 |    11 | 2017-10-31 | 2017-11-01 | 2017-11-30
+ year-month | 2017 |    12 | 2017-11-30 | 2017-12-01 | 2017-12-31
+ year-month | 2018 |     1 | 2017-12-31 | 2018-01-01 | 2018-01-31
+ year-month | 2018 |     2 | 2018-01-31 | 2018-02-01 | 2018-02-28
+ year-month | 2018 |     3 | 2018-02-28 | 2018-03-01 | 2018-03-31
+ year-month | 2018 |     4 | 2018-03-31 | 2018-04-01 | 2018-04-30
+ year-month | 2018 |     5 | 2018-04-30 | 2018-05-01 | 2018-05-31
+ year-month | 2018 |     6 | 2018-05-31 | 2018-06-01 | 2018-06-30
+ year-month | 2018 |     7 | 2018-06-30 | 2018-07-01 | 2018-07-31
+ year-month | 2018 |     8 | 2018-07-31 | 2018-08-01 | 2018-08-31
+ year-month | 2018 |     9 | 2018-08-31 | 2018-09-01 | 2018-09-30
+ year-month | 2018 |    10 | 2018-09-30 | 2018-10-01 | 2018-10-31
+ year-month | 2018 |    11 | 2018-10-31 | 2018-11-01 | 2018-11-30
+ year-month | 2018 |    12 | 2018-11-30 | 2018-12-01 | 2018-12-31
+ year-month | 2019 |     1 | 2018-12-31 | 2019-01-01 | 2019-01-31
+ year-month | 2019 |     2 | 2019-01-31 | 2019-02-01 | 2019-02-28
+ year-month | 2019 |     3 | 2019-02-28 | 2019-03-01 | 2019-03-31
+ year-month | 2019 |     4 | 2019-03-31 | 2019-04-01 | 2019-04-30
+ year-month | 2019 |     5 | 2019-04-30 | 2019-05-01 | 2019-05-31
+ year-month | 2019 |     6 | 2019-05-31 | 2019-06-01 | 2019-06-30
+ year-month | 2019 |     7 | 2019-06-30 | 2019-07-01 | 2019-07-31
+ year-month | 2019 |     8 | 2019-07-31 | 2019-08-01 | 2019-08-31
+ year-month | 2019 |     9 | 2019-08-31 | 2019-09-01 | 2019-09-30
+ year-month | 2019 |    10 | 2019-09-30 | 2019-10-01 | 2019-10-31
+ year-month | 2019 |    11 | 2019-10-31 | 2019-11-01 | 2019-11-30
+ year-month | 2019 |    12 | 2019-11-30 | 2019-12-01 | 2019-12-31
+ year-month | 2020 |     1 | 2019-12-31 | 2020-01-01 | 2020-01-31
+ year-month | 2020 |     2 | 2020-01-31 | 2020-02-01 | 2020-02-29
+ year-month | 2020 |     3 | 2020-02-29 | 2020-03-01 | 2020-03-31
+ year-month | 2020 |     4 | 2020-03-31 | 2020-04-01 | 2020-04-30
+ year-month | 2020 |     5 | 2020-04-30 | 2020-05-01 | 2020-05-31
+ year-month | 2020 |     6 | 2020-05-31 | 2020-06-01 | 2020-06-30
+ year-month | 2020 |     7 | 2020-06-30 | 2020-07-01 | 2020-07-31
+ year-month | 2020 |     8 | 2020-07-31 | 2020-08-01 | 2020-08-31
+ year-month | 2020 |     9 | 2020-08-31 | 2020-09-01 | 2020-09-30
+ year-month | 2020 |    10 | 2020-09-30 | 2020-10-01 | 2020-10-31
+ year-month | 2020 |    11 | 2020-10-31 | 2020-11-01 | 2020-11-30
+ year-month | 2020 |    12 | 2020-11-30 | 2020-12-01 | 2020-12-31
+ year-month | 2021 |     1 | 2020-12-31 | 2021-01-01 | 2021-01-31
+ year-month | 2021 |     2 | 2021-01-31 | 2021-02-01 | 2021-02-28
+ year-month | 2021 |     3 | 2021-02-28 | 2021-03-01 | 2021-03-31
+ year-month | 2021 |     4 | 2021-03-31 | 2021-04-01 | 2021-04-30
+ year-month | 2021 |     5 | 2021-04-30 | 2021-05-01 | 2021-05-31
+ year-month | 2021 |     6 | 2021-05-31 | 2021-06-01 | 2021-06-30
+ year-month | 2021 |     7 | 2021-06-30 | 2021-07-01 | 2021-07-31
+ year-month | 2021 |     8 | 2021-07-31 | 2021-08-01 | 2021-08-31
+ year-month | 2021 |     9 | 2021-08-31 | 2021-09-01 | 2021-09-30
+ year-month | 2021 |    10 | 2021-09-30 | 2021-10-01 | 2021-10-31
+ year-month | 2021 |    11 | 2021-10-31 | 2021-11-01 | 2021-11-30
+ year-month | 2021 |    12 | 2021-11-30 | 2021-12-01 | 2021-12-31
+ year-month | 2022 |     1 | 2021-12-31 | 2022-01-01 | 2022-01-31
+ year-month | 2022 |     2 | 2022-01-31 | 2022-02-01 | 2022-02-28
+ year-month | 2022 |     3 | 2022-02-28 | 2022-03-01 | 2022-03-31
+ year-month | 2022 |     4 | 2022-03-31 | 2022-04-01 | 2022-04-30
+ year-month | 2022 |     5 | 2022-04-30 | 2022-05-01 | 2022-05-31
+ year-month | 2022 |     6 | 2022-05-31 | 2022-06-01 | 2022-06-30
+ year-month | 2022 |     7 | 2022-06-30 | 2022-07-01 | 2022-07-31
+ year-month | 2022 |     8 | 2022-07-31 | 2022-08-01 | 2022-08-31
+ year-month | 2022 |     9 | 2022-08-31 | 2022-09-01 | 2022-09-30
+ year-month | 2022 |    10 | 2022-09-30 | 2022-10-01 | 2022-10-31
+ year-month | 2022 |    11 | 2022-10-31 | 2022-11-01 | 2022-11-30
+ year-month | 2022 |    12 | 2022-11-30 | 2022-12-01 | 2022-12-31
+ year-month | 2023 |     1 | 2022-12-31 | 2023-01-01 | 2023-01-31
+ year-month | 2023 |     2 | 2023-01-31 | 2023-02-01 | 2023-02-28
+ year-month | 2023 |     3 | 2023-02-28 | 2023-03-01 | 2023-03-31
+ year-month | 2023 |     4 | 2023-03-31 | 2023-04-01 | 2023-04-30
+ year-month | 2023 |     5 | 2023-04-30 | 2023-05-01 | 2023-05-31
+ year-month | 2023 |     6 | 2023-05-31 | 2023-06-01 | 2023-06-30
+ year-month | 2023 |     7 | 2023-06-30 | 2023-07-01 | 2023-07-31
+ year-month | 2023 |     8 | 2023-07-31 | 2023-08-01 | 2023-08-31
+ year-month | 2023 |     9 | 2023-08-31 | 2023-09-01 | 2023-09-30
+ year-month | 2023 |    10 | 2023-09-30 | 2023-10-01 | 2023-10-31
+ year-month | 2023 |    11 | 2023-10-31 | 2023-11-01 | 2023-11-30
+ year-month | 2023 |    12 | 2023-11-30 | 2023-12-01 | 2023-12-31
 (182 rows)
 
 \echo "Checking timepoints."
@@ -3515,190 +3515,190 @@ stats_summary       | {                                            +
 SELECT * FROM public.statistical_history_periods
 -- Only list previous years, so the test is stable over time.
 WHERE year <= 2023;
- resolution | year | month | time_start | time_stop  
-------------+------+-------+------------+------------
- year       | 2010 |       | 2010-01-01 | 2010-12-31
- year       | 2011 |       | 2011-01-01 | 2011-12-31
- year       | 2012 |       | 2012-01-01 | 2012-12-31
- year       | 2013 |       | 2013-01-01 | 2013-12-31
- year       | 2014 |       | 2014-01-01 | 2014-12-31
- year       | 2015 |       | 2015-01-01 | 2015-12-31
- year       | 2016 |       | 2016-01-01 | 2016-12-31
- year       | 2017 |       | 2017-01-01 | 2017-12-31
- year       | 2018 |       | 2018-01-01 | 2018-12-31
- year       | 2019 |       | 2019-01-01 | 2019-12-31
- year       | 2020 |       | 2020-01-01 | 2020-12-31
- year       | 2021 |       | 2021-01-01 | 2021-12-31
- year       | 2022 |       | 2022-01-01 | 2022-12-31
- year       | 2023 |       | 2023-01-01 | 2023-12-31
- year-month | 2010 |     1 | 2010-01-01 | 2010-01-31
- year-month | 2010 |     2 | 2010-02-01 | 2010-02-28
- year-month | 2010 |     3 | 2010-03-01 | 2010-03-31
- year-month | 2010 |     4 | 2010-04-01 | 2010-04-30
- year-month | 2010 |     5 | 2010-05-01 | 2010-05-31
- year-month | 2010 |     6 | 2010-06-01 | 2010-06-30
- year-month | 2010 |     7 | 2010-07-01 | 2010-07-31
- year-month | 2010 |     8 | 2010-08-01 | 2010-08-31
- year-month | 2010 |     9 | 2010-09-01 | 2010-09-30
- year-month | 2010 |    10 | 2010-10-01 | 2010-10-31
- year-month | 2010 |    11 | 2010-11-01 | 2010-11-30
- year-month | 2010 |    12 | 2010-12-01 | 2010-12-31
- year-month | 2011 |     1 | 2011-01-01 | 2011-01-31
- year-month | 2011 |     2 | 2011-02-01 | 2011-02-28
- year-month | 2011 |     3 | 2011-03-01 | 2011-03-31
- year-month | 2011 |     4 | 2011-04-01 | 2011-04-30
- year-month | 2011 |     5 | 2011-05-01 | 2011-05-31
- year-month | 2011 |     6 | 2011-06-01 | 2011-06-30
- year-month | 2011 |     7 | 2011-07-01 | 2011-07-31
- year-month | 2011 |     8 | 2011-08-01 | 2011-08-31
- year-month | 2011 |     9 | 2011-09-01 | 2011-09-30
- year-month | 2011 |    10 | 2011-10-01 | 2011-10-31
- year-month | 2011 |    11 | 2011-11-01 | 2011-11-30
- year-month | 2011 |    12 | 2011-12-01 | 2011-12-31
- year-month | 2012 |     1 | 2012-01-01 | 2012-01-31
- year-month | 2012 |     2 | 2012-02-01 | 2012-02-29
- year-month | 2012 |     3 | 2012-03-01 | 2012-03-31
- year-month | 2012 |     4 | 2012-04-01 | 2012-04-30
- year-month | 2012 |     5 | 2012-05-01 | 2012-05-31
- year-month | 2012 |     6 | 2012-06-01 | 2012-06-30
- year-month | 2012 |     7 | 2012-07-01 | 2012-07-31
- year-month | 2012 |     8 | 2012-08-01 | 2012-08-31
- year-month | 2012 |     9 | 2012-09-01 | 2012-09-30
- year-month | 2012 |    10 | 2012-10-01 | 2012-10-31
- year-month | 2012 |    11 | 2012-11-01 | 2012-11-30
- year-month | 2012 |    12 | 2012-12-01 | 2012-12-31
- year-month | 2013 |     1 | 2013-01-01 | 2013-01-31
- year-month | 2013 |     2 | 2013-02-01 | 2013-02-28
- year-month | 2013 |     3 | 2013-03-01 | 2013-03-31
- year-month | 2013 |     4 | 2013-04-01 | 2013-04-30
- year-month | 2013 |     5 | 2013-05-01 | 2013-05-31
- year-month | 2013 |     6 | 2013-06-01 | 2013-06-30
- year-month | 2013 |     7 | 2013-07-01 | 2013-07-31
- year-month | 2013 |     8 | 2013-08-01 | 2013-08-31
- year-month | 2013 |     9 | 2013-09-01 | 2013-09-30
- year-month | 2013 |    10 | 2013-10-01 | 2013-10-31
- year-month | 2013 |    11 | 2013-11-01 | 2013-11-30
- year-month | 2013 |    12 | 2013-12-01 | 2013-12-31
- year-month | 2014 |     1 | 2014-01-01 | 2014-01-31
- year-month | 2014 |     2 | 2014-02-01 | 2014-02-28
- year-month | 2014 |     3 | 2014-03-01 | 2014-03-31
- year-month | 2014 |     4 | 2014-04-01 | 2014-04-30
- year-month | 2014 |     5 | 2014-05-01 | 2014-05-31
- year-month | 2014 |     6 | 2014-06-01 | 2014-06-30
- year-month | 2014 |     7 | 2014-07-01 | 2014-07-31
- year-month | 2014 |     8 | 2014-08-01 | 2014-08-31
- year-month | 2014 |     9 | 2014-09-01 | 2014-09-30
- year-month | 2014 |    10 | 2014-10-01 | 2014-10-31
- year-month | 2014 |    11 | 2014-11-01 | 2014-11-30
- year-month | 2014 |    12 | 2014-12-01 | 2014-12-31
- year-month | 2015 |     1 | 2015-01-01 | 2015-01-31
- year-month | 2015 |     2 | 2015-02-01 | 2015-02-28
- year-month | 2015 |     3 | 2015-03-01 | 2015-03-31
- year-month | 2015 |     4 | 2015-04-01 | 2015-04-30
- year-month | 2015 |     5 | 2015-05-01 | 2015-05-31
- year-month | 2015 |     6 | 2015-06-01 | 2015-06-30
- year-month | 2015 |     7 | 2015-07-01 | 2015-07-31
- year-month | 2015 |     8 | 2015-08-01 | 2015-08-31
- year-month | 2015 |     9 | 2015-09-01 | 2015-09-30
- year-month | 2015 |    10 | 2015-10-01 | 2015-10-31
- year-month | 2015 |    11 | 2015-11-01 | 2015-11-30
- year-month | 2015 |    12 | 2015-12-01 | 2015-12-31
- year-month | 2016 |     1 | 2016-01-01 | 2016-01-31
- year-month | 2016 |     2 | 2016-02-01 | 2016-02-29
- year-month | 2016 |     3 | 2016-03-01 | 2016-03-31
- year-month | 2016 |     4 | 2016-04-01 | 2016-04-30
- year-month | 2016 |     5 | 2016-05-01 | 2016-05-31
- year-month | 2016 |     6 | 2016-06-01 | 2016-06-30
- year-month | 2016 |     7 | 2016-07-01 | 2016-07-31
- year-month | 2016 |     8 | 2016-08-01 | 2016-08-31
- year-month | 2016 |     9 | 2016-09-01 | 2016-09-30
- year-month | 2016 |    10 | 2016-10-01 | 2016-10-31
- year-month | 2016 |    11 | 2016-11-01 | 2016-11-30
- year-month | 2016 |    12 | 2016-12-01 | 2016-12-31
- year-month | 2017 |     1 | 2017-01-01 | 2017-01-31
- year-month | 2017 |     2 | 2017-02-01 | 2017-02-28
- year-month | 2017 |     3 | 2017-03-01 | 2017-03-31
- year-month | 2017 |     4 | 2017-04-01 | 2017-04-30
- year-month | 2017 |     5 | 2017-05-01 | 2017-05-31
- year-month | 2017 |     6 | 2017-06-01 | 2017-06-30
- year-month | 2017 |     7 | 2017-07-01 | 2017-07-31
- year-month | 2017 |     8 | 2017-08-01 | 2017-08-31
- year-month | 2017 |     9 | 2017-09-01 | 2017-09-30
- year-month | 2017 |    10 | 2017-10-01 | 2017-10-31
- year-month | 2017 |    11 | 2017-11-01 | 2017-11-30
- year-month | 2017 |    12 | 2017-12-01 | 2017-12-31
- year-month | 2018 |     1 | 2018-01-01 | 2018-01-31
- year-month | 2018 |     2 | 2018-02-01 | 2018-02-28
- year-month | 2018 |     3 | 2018-03-01 | 2018-03-31
- year-month | 2018 |     4 | 2018-04-01 | 2018-04-30
- year-month | 2018 |     5 | 2018-05-01 | 2018-05-31
- year-month | 2018 |     6 | 2018-06-01 | 2018-06-30
- year-month | 2018 |     7 | 2018-07-01 | 2018-07-31
- year-month | 2018 |     8 | 2018-08-01 | 2018-08-31
- year-month | 2018 |     9 | 2018-09-01 | 2018-09-30
- year-month | 2018 |    10 | 2018-10-01 | 2018-10-31
- year-month | 2018 |    11 | 2018-11-01 | 2018-11-30
- year-month | 2018 |    12 | 2018-12-01 | 2018-12-31
- year-month | 2019 |     1 | 2019-01-01 | 2019-01-31
- year-month | 2019 |     2 | 2019-02-01 | 2019-02-28
- year-month | 2019 |     3 | 2019-03-01 | 2019-03-31
- year-month | 2019 |     4 | 2019-04-01 | 2019-04-30
- year-month | 2019 |     5 | 2019-05-01 | 2019-05-31
- year-month | 2019 |     6 | 2019-06-01 | 2019-06-30
- year-month | 2019 |     7 | 2019-07-01 | 2019-07-31
- year-month | 2019 |     8 | 2019-08-01 | 2019-08-31
- year-month | 2019 |     9 | 2019-09-01 | 2019-09-30
- year-month | 2019 |    10 | 2019-10-01 | 2019-10-31
- year-month | 2019 |    11 | 2019-11-01 | 2019-11-30
- year-month | 2019 |    12 | 2019-12-01 | 2019-12-31
- year-month | 2020 |     1 | 2020-01-01 | 2020-01-31
- year-month | 2020 |     2 | 2020-02-01 | 2020-02-29
- year-month | 2020 |     3 | 2020-03-01 | 2020-03-31
- year-month | 2020 |     4 | 2020-04-01 | 2020-04-30
- year-month | 2020 |     5 | 2020-05-01 | 2020-05-31
- year-month | 2020 |     6 | 2020-06-01 | 2020-06-30
- year-month | 2020 |     7 | 2020-07-01 | 2020-07-31
- year-month | 2020 |     8 | 2020-08-01 | 2020-08-31
- year-month | 2020 |     9 | 2020-09-01 | 2020-09-30
- year-month | 2020 |    10 | 2020-10-01 | 2020-10-31
- year-month | 2020 |    11 | 2020-11-01 | 2020-11-30
- year-month | 2020 |    12 | 2020-12-01 | 2020-12-31
- year-month | 2021 |     1 | 2021-01-01 | 2021-01-31
- year-month | 2021 |     2 | 2021-02-01 | 2021-02-28
- year-month | 2021 |     3 | 2021-03-01 | 2021-03-31
- year-month | 2021 |     4 | 2021-04-01 | 2021-04-30
- year-month | 2021 |     5 | 2021-05-01 | 2021-05-31
- year-month | 2021 |     6 | 2021-06-01 | 2021-06-30
- year-month | 2021 |     7 | 2021-07-01 | 2021-07-31
- year-month | 2021 |     8 | 2021-08-01 | 2021-08-31
- year-month | 2021 |     9 | 2021-09-01 | 2021-09-30
- year-month | 2021 |    10 | 2021-10-01 | 2021-10-31
- year-month | 2021 |    11 | 2021-11-01 | 2021-11-30
- year-month | 2021 |    12 | 2021-12-01 | 2021-12-31
- year-month | 2022 |     1 | 2022-01-01 | 2022-01-31
- year-month | 2022 |     2 | 2022-02-01 | 2022-02-28
- year-month | 2022 |     3 | 2022-03-01 | 2022-03-31
- year-month | 2022 |     4 | 2022-04-01 | 2022-04-30
- year-month | 2022 |     5 | 2022-05-01 | 2022-05-31
- year-month | 2022 |     6 | 2022-06-01 | 2022-06-30
- year-month | 2022 |     7 | 2022-07-01 | 2022-07-31
- year-month | 2022 |     8 | 2022-08-01 | 2022-08-31
- year-month | 2022 |     9 | 2022-09-01 | 2022-09-30
- year-month | 2022 |    10 | 2022-10-01 | 2022-10-31
- year-month | 2022 |    11 | 2022-11-01 | 2022-11-30
- year-month | 2022 |    12 | 2022-12-01 | 2022-12-31
- year-month | 2023 |     1 | 2023-01-01 | 2023-01-31
- year-month | 2023 |     2 | 2023-02-01 | 2023-02-28
- year-month | 2023 |     3 | 2023-03-01 | 2023-03-31
- year-month | 2023 |     4 | 2023-04-01 | 2023-04-30
- year-month | 2023 |     5 | 2023-05-01 | 2023-05-31
- year-month | 2023 |     6 | 2023-06-01 | 2023-06-30
- year-month | 2023 |     7 | 2023-07-01 | 2023-07-31
- year-month | 2023 |     8 | 2023-08-01 | 2023-08-31
- year-month | 2023 |     9 | 2023-09-01 | 2023-09-30
- year-month | 2023 |    10 | 2023-10-01 | 2023-10-31
- year-month | 2023 |    11 | 2023-11-01 | 2023-11-30
- year-month | 2023 |    12 | 2023-12-01 | 2023-12-31
+ resolution | year | month | prev_stop  | curr_start | curr_stop  
+------------+------+-------+------------+------------+------------
+ year       | 2010 |       | 2009-12-31 | 2010-01-01 | 2010-12-31
+ year       | 2011 |       | 2010-12-31 | 2011-01-01 | 2011-12-31
+ year       | 2012 |       | 2011-12-31 | 2012-01-01 | 2012-12-31
+ year       | 2013 |       | 2012-12-31 | 2013-01-01 | 2013-12-31
+ year       | 2014 |       | 2013-12-31 | 2014-01-01 | 2014-12-31
+ year       | 2015 |       | 2014-12-31 | 2015-01-01 | 2015-12-31
+ year       | 2016 |       | 2015-12-31 | 2016-01-01 | 2016-12-31
+ year       | 2017 |       | 2016-12-31 | 2017-01-01 | 2017-12-31
+ year       | 2018 |       | 2017-12-31 | 2018-01-01 | 2018-12-31
+ year       | 2019 |       | 2018-12-31 | 2019-01-01 | 2019-12-31
+ year       | 2020 |       | 2019-12-31 | 2020-01-01 | 2020-12-31
+ year       | 2021 |       | 2020-12-31 | 2021-01-01 | 2021-12-31
+ year       | 2022 |       | 2021-12-31 | 2022-01-01 | 2022-12-31
+ year       | 2023 |       | 2022-12-31 | 2023-01-01 | 2023-12-31
+ year-month | 2010 |     1 | 2009-12-31 | 2010-01-01 | 2010-01-31
+ year-month | 2010 |     2 | 2010-01-31 | 2010-02-01 | 2010-02-28
+ year-month | 2010 |     3 | 2010-02-28 | 2010-03-01 | 2010-03-31
+ year-month | 2010 |     4 | 2010-03-31 | 2010-04-01 | 2010-04-30
+ year-month | 2010 |     5 | 2010-04-30 | 2010-05-01 | 2010-05-31
+ year-month | 2010 |     6 | 2010-05-31 | 2010-06-01 | 2010-06-30
+ year-month | 2010 |     7 | 2010-06-30 | 2010-07-01 | 2010-07-31
+ year-month | 2010 |     8 | 2010-07-31 | 2010-08-01 | 2010-08-31
+ year-month | 2010 |     9 | 2010-08-31 | 2010-09-01 | 2010-09-30
+ year-month | 2010 |    10 | 2010-09-30 | 2010-10-01 | 2010-10-31
+ year-month | 2010 |    11 | 2010-10-31 | 2010-11-01 | 2010-11-30
+ year-month | 2010 |    12 | 2010-11-30 | 2010-12-01 | 2010-12-31
+ year-month | 2011 |     1 | 2010-12-31 | 2011-01-01 | 2011-01-31
+ year-month | 2011 |     2 | 2011-01-31 | 2011-02-01 | 2011-02-28
+ year-month | 2011 |     3 | 2011-02-28 | 2011-03-01 | 2011-03-31
+ year-month | 2011 |     4 | 2011-03-31 | 2011-04-01 | 2011-04-30
+ year-month | 2011 |     5 | 2011-04-30 | 2011-05-01 | 2011-05-31
+ year-month | 2011 |     6 | 2011-05-31 | 2011-06-01 | 2011-06-30
+ year-month | 2011 |     7 | 2011-06-30 | 2011-07-01 | 2011-07-31
+ year-month | 2011 |     8 | 2011-07-31 | 2011-08-01 | 2011-08-31
+ year-month | 2011 |     9 | 2011-08-31 | 2011-09-01 | 2011-09-30
+ year-month | 2011 |    10 | 2011-09-30 | 2011-10-01 | 2011-10-31
+ year-month | 2011 |    11 | 2011-10-31 | 2011-11-01 | 2011-11-30
+ year-month | 2011 |    12 | 2011-11-30 | 2011-12-01 | 2011-12-31
+ year-month | 2012 |     1 | 2011-12-31 | 2012-01-01 | 2012-01-31
+ year-month | 2012 |     2 | 2012-01-31 | 2012-02-01 | 2012-02-29
+ year-month | 2012 |     3 | 2012-02-29 | 2012-03-01 | 2012-03-31
+ year-month | 2012 |     4 | 2012-03-31 | 2012-04-01 | 2012-04-30
+ year-month | 2012 |     5 | 2012-04-30 | 2012-05-01 | 2012-05-31
+ year-month | 2012 |     6 | 2012-05-31 | 2012-06-01 | 2012-06-30
+ year-month | 2012 |     7 | 2012-06-30 | 2012-07-01 | 2012-07-31
+ year-month | 2012 |     8 | 2012-07-31 | 2012-08-01 | 2012-08-31
+ year-month | 2012 |     9 | 2012-08-31 | 2012-09-01 | 2012-09-30
+ year-month | 2012 |    10 | 2012-09-30 | 2012-10-01 | 2012-10-31
+ year-month | 2012 |    11 | 2012-10-31 | 2012-11-01 | 2012-11-30
+ year-month | 2012 |    12 | 2012-11-30 | 2012-12-01 | 2012-12-31
+ year-month | 2013 |     1 | 2012-12-31 | 2013-01-01 | 2013-01-31
+ year-month | 2013 |     2 | 2013-01-31 | 2013-02-01 | 2013-02-28
+ year-month | 2013 |     3 | 2013-02-28 | 2013-03-01 | 2013-03-31
+ year-month | 2013 |     4 | 2013-03-31 | 2013-04-01 | 2013-04-30
+ year-month | 2013 |     5 | 2013-04-30 | 2013-05-01 | 2013-05-31
+ year-month | 2013 |     6 | 2013-05-31 | 2013-06-01 | 2013-06-30
+ year-month | 2013 |     7 | 2013-06-30 | 2013-07-01 | 2013-07-31
+ year-month | 2013 |     8 | 2013-07-31 | 2013-08-01 | 2013-08-31
+ year-month | 2013 |     9 | 2013-08-31 | 2013-09-01 | 2013-09-30
+ year-month | 2013 |    10 | 2013-09-30 | 2013-10-01 | 2013-10-31
+ year-month | 2013 |    11 | 2013-10-31 | 2013-11-01 | 2013-11-30
+ year-month | 2013 |    12 | 2013-11-30 | 2013-12-01 | 2013-12-31
+ year-month | 2014 |     1 | 2013-12-31 | 2014-01-01 | 2014-01-31
+ year-month | 2014 |     2 | 2014-01-31 | 2014-02-01 | 2014-02-28
+ year-month | 2014 |     3 | 2014-02-28 | 2014-03-01 | 2014-03-31
+ year-month | 2014 |     4 | 2014-03-31 | 2014-04-01 | 2014-04-30
+ year-month | 2014 |     5 | 2014-04-30 | 2014-05-01 | 2014-05-31
+ year-month | 2014 |     6 | 2014-05-31 | 2014-06-01 | 2014-06-30
+ year-month | 2014 |     7 | 2014-06-30 | 2014-07-01 | 2014-07-31
+ year-month | 2014 |     8 | 2014-07-31 | 2014-08-01 | 2014-08-31
+ year-month | 2014 |     9 | 2014-08-31 | 2014-09-01 | 2014-09-30
+ year-month | 2014 |    10 | 2014-09-30 | 2014-10-01 | 2014-10-31
+ year-month | 2014 |    11 | 2014-10-31 | 2014-11-01 | 2014-11-30
+ year-month | 2014 |    12 | 2014-11-30 | 2014-12-01 | 2014-12-31
+ year-month | 2015 |     1 | 2014-12-31 | 2015-01-01 | 2015-01-31
+ year-month | 2015 |     2 | 2015-01-31 | 2015-02-01 | 2015-02-28
+ year-month | 2015 |     3 | 2015-02-28 | 2015-03-01 | 2015-03-31
+ year-month | 2015 |     4 | 2015-03-31 | 2015-04-01 | 2015-04-30
+ year-month | 2015 |     5 | 2015-04-30 | 2015-05-01 | 2015-05-31
+ year-month | 2015 |     6 | 2015-05-31 | 2015-06-01 | 2015-06-30
+ year-month | 2015 |     7 | 2015-06-30 | 2015-07-01 | 2015-07-31
+ year-month | 2015 |     8 | 2015-07-31 | 2015-08-01 | 2015-08-31
+ year-month | 2015 |     9 | 2015-08-31 | 2015-09-01 | 2015-09-30
+ year-month | 2015 |    10 | 2015-09-30 | 2015-10-01 | 2015-10-31
+ year-month | 2015 |    11 | 2015-10-31 | 2015-11-01 | 2015-11-30
+ year-month | 2015 |    12 | 2015-11-30 | 2015-12-01 | 2015-12-31
+ year-month | 2016 |     1 | 2015-12-31 | 2016-01-01 | 2016-01-31
+ year-month | 2016 |     2 | 2016-01-31 | 2016-02-01 | 2016-02-29
+ year-month | 2016 |     3 | 2016-02-29 | 2016-03-01 | 2016-03-31
+ year-month | 2016 |     4 | 2016-03-31 | 2016-04-01 | 2016-04-30
+ year-month | 2016 |     5 | 2016-04-30 | 2016-05-01 | 2016-05-31
+ year-month | 2016 |     6 | 2016-05-31 | 2016-06-01 | 2016-06-30
+ year-month | 2016 |     7 | 2016-06-30 | 2016-07-01 | 2016-07-31
+ year-month | 2016 |     8 | 2016-07-31 | 2016-08-01 | 2016-08-31
+ year-month | 2016 |     9 | 2016-08-31 | 2016-09-01 | 2016-09-30
+ year-month | 2016 |    10 | 2016-09-30 | 2016-10-01 | 2016-10-31
+ year-month | 2016 |    11 | 2016-10-31 | 2016-11-01 | 2016-11-30
+ year-month | 2016 |    12 | 2016-11-30 | 2016-12-01 | 2016-12-31
+ year-month | 2017 |     1 | 2016-12-31 | 2017-01-01 | 2017-01-31
+ year-month | 2017 |     2 | 2017-01-31 | 2017-02-01 | 2017-02-28
+ year-month | 2017 |     3 | 2017-02-28 | 2017-03-01 | 2017-03-31
+ year-month | 2017 |     4 | 2017-03-31 | 2017-04-01 | 2017-04-30
+ year-month | 2017 |     5 | 2017-04-30 | 2017-05-01 | 2017-05-31
+ year-month | 2017 |     6 | 2017-05-31 | 2017-06-01 | 2017-06-30
+ year-month | 2017 |     7 | 2017-06-30 | 2017-07-01 | 2017-07-31
+ year-month | 2017 |     8 | 2017-07-31 | 2017-08-01 | 2017-08-31
+ year-month | 2017 |     9 | 2017-08-31 | 2017-09-01 | 2017-09-30
+ year-month | 2017 |    10 | 2017-09-30 | 2017-10-01 | 2017-10-31
+ year-month | 2017 |    11 | 2017-10-31 | 2017-11-01 | 2017-11-30
+ year-month | 2017 |    12 | 2017-11-30 | 2017-12-01 | 2017-12-31
+ year-month | 2018 |     1 | 2017-12-31 | 2018-01-01 | 2018-01-31
+ year-month | 2018 |     2 | 2018-01-31 | 2018-02-01 | 2018-02-28
+ year-month | 2018 |     3 | 2018-02-28 | 2018-03-01 | 2018-03-31
+ year-month | 2018 |     4 | 2018-03-31 | 2018-04-01 | 2018-04-30
+ year-month | 2018 |     5 | 2018-04-30 | 2018-05-01 | 2018-05-31
+ year-month | 2018 |     6 | 2018-05-31 | 2018-06-01 | 2018-06-30
+ year-month | 2018 |     7 | 2018-06-30 | 2018-07-01 | 2018-07-31
+ year-month | 2018 |     8 | 2018-07-31 | 2018-08-01 | 2018-08-31
+ year-month | 2018 |     9 | 2018-08-31 | 2018-09-01 | 2018-09-30
+ year-month | 2018 |    10 | 2018-09-30 | 2018-10-01 | 2018-10-31
+ year-month | 2018 |    11 | 2018-10-31 | 2018-11-01 | 2018-11-30
+ year-month | 2018 |    12 | 2018-11-30 | 2018-12-01 | 2018-12-31
+ year-month | 2019 |     1 | 2018-12-31 | 2019-01-01 | 2019-01-31
+ year-month | 2019 |     2 | 2019-01-31 | 2019-02-01 | 2019-02-28
+ year-month | 2019 |     3 | 2019-02-28 | 2019-03-01 | 2019-03-31
+ year-month | 2019 |     4 | 2019-03-31 | 2019-04-01 | 2019-04-30
+ year-month | 2019 |     5 | 2019-04-30 | 2019-05-01 | 2019-05-31
+ year-month | 2019 |     6 | 2019-05-31 | 2019-06-01 | 2019-06-30
+ year-month | 2019 |     7 | 2019-06-30 | 2019-07-01 | 2019-07-31
+ year-month | 2019 |     8 | 2019-07-31 | 2019-08-01 | 2019-08-31
+ year-month | 2019 |     9 | 2019-08-31 | 2019-09-01 | 2019-09-30
+ year-month | 2019 |    10 | 2019-09-30 | 2019-10-01 | 2019-10-31
+ year-month | 2019 |    11 | 2019-10-31 | 2019-11-01 | 2019-11-30
+ year-month | 2019 |    12 | 2019-11-30 | 2019-12-01 | 2019-12-31
+ year-month | 2020 |     1 | 2019-12-31 | 2020-01-01 | 2020-01-31
+ year-month | 2020 |     2 | 2020-01-31 | 2020-02-01 | 2020-02-29
+ year-month | 2020 |     3 | 2020-02-29 | 2020-03-01 | 2020-03-31
+ year-month | 2020 |     4 | 2020-03-31 | 2020-04-01 | 2020-04-30
+ year-month | 2020 |     5 | 2020-04-30 | 2020-05-01 | 2020-05-31
+ year-month | 2020 |     6 | 2020-05-31 | 2020-06-01 | 2020-06-30
+ year-month | 2020 |     7 | 2020-06-30 | 2020-07-01 | 2020-07-31
+ year-month | 2020 |     8 | 2020-07-31 | 2020-08-01 | 2020-08-31
+ year-month | 2020 |     9 | 2020-08-31 | 2020-09-01 | 2020-09-30
+ year-month | 2020 |    10 | 2020-09-30 | 2020-10-01 | 2020-10-31
+ year-month | 2020 |    11 | 2020-10-31 | 2020-11-01 | 2020-11-30
+ year-month | 2020 |    12 | 2020-11-30 | 2020-12-01 | 2020-12-31
+ year-month | 2021 |     1 | 2020-12-31 | 2021-01-01 | 2021-01-31
+ year-month | 2021 |     2 | 2021-01-31 | 2021-02-01 | 2021-02-28
+ year-month | 2021 |     3 | 2021-02-28 | 2021-03-01 | 2021-03-31
+ year-month | 2021 |     4 | 2021-03-31 | 2021-04-01 | 2021-04-30
+ year-month | 2021 |     5 | 2021-04-30 | 2021-05-01 | 2021-05-31
+ year-month | 2021 |     6 | 2021-05-31 | 2021-06-01 | 2021-06-30
+ year-month | 2021 |     7 | 2021-06-30 | 2021-07-01 | 2021-07-31
+ year-month | 2021 |     8 | 2021-07-31 | 2021-08-01 | 2021-08-31
+ year-month | 2021 |     9 | 2021-08-31 | 2021-09-01 | 2021-09-30
+ year-month | 2021 |    10 | 2021-09-30 | 2021-10-01 | 2021-10-31
+ year-month | 2021 |    11 | 2021-10-31 | 2021-11-01 | 2021-11-30
+ year-month | 2021 |    12 | 2021-11-30 | 2021-12-01 | 2021-12-31
+ year-month | 2022 |     1 | 2021-12-31 | 2022-01-01 | 2022-01-31
+ year-month | 2022 |     2 | 2022-01-31 | 2022-02-01 | 2022-02-28
+ year-month | 2022 |     3 | 2022-02-28 | 2022-03-01 | 2022-03-31
+ year-month | 2022 |     4 | 2022-03-31 | 2022-04-01 | 2022-04-30
+ year-month | 2022 |     5 | 2022-04-30 | 2022-05-01 | 2022-05-31
+ year-month | 2022 |     6 | 2022-05-31 | 2022-06-01 | 2022-06-30
+ year-month | 2022 |     7 | 2022-06-30 | 2022-07-01 | 2022-07-31
+ year-month | 2022 |     8 | 2022-07-31 | 2022-08-01 | 2022-08-31
+ year-month | 2022 |     9 | 2022-08-31 | 2022-09-01 | 2022-09-30
+ year-month | 2022 |    10 | 2022-09-30 | 2022-10-01 | 2022-10-31
+ year-month | 2022 |    11 | 2022-10-31 | 2022-11-01 | 2022-11-30
+ year-month | 2022 |    12 | 2022-11-30 | 2022-12-01 | 2022-12-31
+ year-month | 2023 |     1 | 2022-12-31 | 2023-01-01 | 2023-01-31
+ year-month | 2023 |     2 | 2023-01-31 | 2023-02-01 | 2023-02-28
+ year-month | 2023 |     3 | 2023-02-28 | 2023-03-01 | 2023-03-31
+ year-month | 2023 |     4 | 2023-03-31 | 2023-04-01 | 2023-04-30
+ year-month | 2023 |     5 | 2023-04-30 | 2023-05-01 | 2023-05-31
+ year-month | 2023 |     6 | 2023-05-31 | 2023-06-01 | 2023-06-30
+ year-month | 2023 |     7 | 2023-06-30 | 2023-07-01 | 2023-07-31
+ year-month | 2023 |     8 | 2023-07-31 | 2023-08-01 | 2023-08-31
+ year-month | 2023 |     9 | 2023-08-31 | 2023-09-01 | 2023-09-30
+ year-month | 2023 |    10 | 2023-09-30 | 2023-10-01 | 2023-10-31
+ year-month | 2023 |    11 | 2023-10-31 | 2023-11-01 | 2023-11-30
+ year-month | 2023 |    12 | 2023-11-30 | 2023-12-01 | 2023-12-31
 (182 rows)
 
 \echo "Test yearly data"
@@ -3726,8 +3726,8 @@ ORDER BY year,unit_type;
  2011 | legal_unit    |     1 |      0 |      0 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
  2011 | enterprise    |     1 |      0 |      0 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
  2012 | establishment |     1 |      0 |      0 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
- 2012 | legal_unit    |     1 |      0 |      1 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
- 2012 | enterprise    |     1 |      0 |      1 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
+ 2012 | legal_unit    |     0 |      0 |      1 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
+ 2012 | enterprise    |     0 |      0 |      1 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
  2013 | establishment |     1 |      0 |      0 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
  2013 | legal_unit    |     1 |      1 |      0 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
  2013 | enterprise    |     1 |      1 |      0 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
@@ -7017,8 +7017,8 @@ ORDER BY year,unit_type;
  2011 | legal_unit    | H.49.4.1.0                     |                                  | innl.a_ikke_fin.2100 | 11.21                |     1 |      0 |      0 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
  2011 | enterprise    | H.49.4.1.0                     |                                  | innl.a_ikke_fin.2100 | 11.21                |     1 |      0 |      0 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
  2012 | establishment | H.49.4.1.0                     |                                  |                      | 11.21                |     1 |      0 |      0 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
- 2012 | legal_unit    | H.49.4.1.0                     |                                  | innl.a_ikke_fin.2100 | 11.21                |     1 |      0 |      1 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
- 2012 | enterprise    | H.49.4.1.0                     |                                  | innl.a_ikke_fin.2100 | 11.21                |     1 |      0 |      1 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
+ 2012 | legal_unit    | H.49.4.1.0                     |                                  | innl.a_ikke_fin.2100 | 11.21                |     0 |      0 |      1 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
+ 2012 | enterprise    | H.49.4.1.0                     |                                  | innl.a_ikke_fin.2100 | 11.21                |     0 |      0 |      1 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
  2013 | establishment | H.49.4.1.0                     |                                  |                      | 11.21                |     1 |      0 |      0 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
  2013 | legal_unit    | H.49.4.1.0                     |                                  | innl.a_ikke_fin.2100 | 11.21                |     1 |      1 |      0 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
  2013 | enterprise    | H.49.4.1.0                     |                                  | innl.a_ikke_fin.2100 | 11.21                |     1 |      1 |      0 |                                      0 |                                        0 |                   0 |                       0 |                            0 |                             0
@@ -9343,7 +9343,7 @@ statistical_history_drilldown
         },
         {
             "year": 2012,
-            "count": 1,
+            "count": 0,
             "month": null,
             "births": 0,
             "deaths": 1,
@@ -9850,7 +9850,7 @@ statistical_history_drilldown
                 "code": "11",
                 "name": "Rogaland",
                 "path": "11",
-                "count": 15,
+                "count": 14,
                 "label": "11",
                 "has_children": true
             }
@@ -9860,7 +9860,7 @@ statistical_history_drilldown
                 "code": null,
                 "name": "Innenlandske sektorer",
                 "path": "innl",
-                "count": 15,
+                "count": 14,
                 "label": "innl",
                 "has_children": true
             }
@@ -9868,7 +9868,7 @@ statistical_history_drilldown
         "country": [
             {
                 "name": "Norway",
-                "count": 15,
+                "count": 14,
                 "iso_2": "NO",
                 "has_children": false
             }
@@ -9883,7 +9883,7 @@ statistical_history_drilldown
             {
                 "code": "ENK",
                 "name": "Enkeltpersonforetak",
-                "count": 3,
+                "count": 2,
                 "has_children": false
             }
         ],
@@ -9892,7 +9892,7 @@ statistical_history_drilldown
                 "code": "",
                 "name": "Transport og lagring",
                 "path": "H",
-                "count": 15,
+                "count": 14,
                 "label": "H",
                 "has_children": true
             }
@@ -10003,7 +10003,7 @@ statistical_history_drilldown
         },
         {
             "year": 2012,
-            "count": 1,
+            "count": 0,
             "month": null,
             "births": 0,
             "deaths": 1,
@@ -10510,7 +10510,7 @@ statistical_history_drilldown
                 "code": "11",
                 "name": "Rogaland",
                 "path": "11",
-                "count": 15,
+                "count": 14,
                 "label": "11",
                 "has_children": true
             }
@@ -10520,7 +10520,7 @@ statistical_history_drilldown
                 "code": null,
                 "name": "Innenlandske sektorer",
                 "path": "innl",
-                "count": 15,
+                "count": 14,
                 "label": "innl",
                 "has_children": true
             }
@@ -10528,7 +10528,7 @@ statistical_history_drilldown
         "country": [
             {
                 "name": "Norway",
-                "count": 15,
+                "count": 14,
                 "iso_2": "NO",
                 "has_children": false
             }
@@ -10543,7 +10543,7 @@ statistical_history_drilldown
             {
                 "code": "ENK",
                 "name": "Enkeltpersonforetak",
-                "count": 3,
+                "count": 2,
                 "has_children": false
             }
         ],
@@ -10552,7 +10552,7 @@ statistical_history_drilldown
                 "code": "",
                 "name": "Transport og lagring",
                 "path": "H",
-                "count": 15,
+                "count": 14,
                 "label": "H",
                 "has_children": true
             }
@@ -12259,7 +12259,7 @@ statistical_unit_hierarchy
                                     "name": "Number of people employed",
                                     "type": "int",
                                     "archived": false,
-                                    "priority": 2,
+                                    "priority": 1,
                                     "frequency": "yearly",
                                     "description": "The number of people receiving an official salary with government reporting."
                                 }
@@ -12274,7 +12274,7 @@ statistical_unit_hierarchy
                                     "name": "Turnover",
                                     "type": "int",
                                     "archived": false,
-                                    "priority": 3,
+                                    "priority": 2,
                                     "frequency": "yearly",
                                     "description": "The amount (EUR)"
                                 }
@@ -12497,7 +12497,7 @@ statistical_unit_hierarchy
                                     "name": "Number of people employed",
                                     "type": "int",
                                     "archived": false,
-                                    "priority": 2,
+                                    "priority": 1,
                                     "frequency": "yearly",
                                     "description": "The number of people receiving an official salary with government reporting."
                                 }
@@ -12512,7 +12512,7 @@ statistical_unit_hierarchy
                                     "name": "Turnover",
                                     "type": "int",
                                     "archived": false,
-                                    "priority": 3,
+                                    "priority": 2,
                                     "frequency": "yearly",
                                     "description": "The amount (EUR)"
                                 }
@@ -12734,7 +12734,7 @@ statistical_unit_hierarchy
                                     "name": "Number of people employed",
                                     "type": "int",
                                     "archived": false,
-                                    "priority": 2,
+                                    "priority": 1,
                                     "frequency": "yearly",
                                     "description": "The number of people receiving an official salary with government reporting."
                                 }
@@ -12749,7 +12749,7 @@ statistical_unit_hierarchy
                                     "name": "Turnover",
                                     "type": "int",
                                     "archived": false,
-                                    "priority": 3,
+                                    "priority": 2,
                                     "frequency": "yearly",
                                     "description": "The amount (EUR)"
                                 }
diff --git a/test/expected/05_modify_enterprise_connections.out b/test/expected/05_modify_enterprise_connections.out
index b75405c92..0d0b9e508 100644
--- a/test/expected/05_modify_enterprise_connections.out
+++ b/test/expected/05_modify_enterprise_connections.out
@@ -297,7 +297,7 @@ SELECT jsonb_pretty(
                                      "name": "Number of people employed",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        +
                                      "type": "int",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "archived": false,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          +
-                                     "priority": 2,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
+                                     "priority": 1,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "frequency": "yearly",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      +
                                      "description": "The number of people receiving an official salary with government reporting."                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
                                  }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
@@ -312,7 +312,7 @@ SELECT jsonb_pretty(
                                      "name": "Turnover",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         +
                                      "type": "int",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "archived": false,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          +
-                                     "priority": 3,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
+                                     "priority": 2,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "frequency": "yearly",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      +
                                      "description": "The amount (EUR)"                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           +
                                  }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
@@ -543,7 +543,7 @@ SELECT jsonb_pretty(
                                      "name": "Number of people employed",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        +
                                      "type": "int",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "archived": false,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          +
-                                     "priority": 2,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
+                                     "priority": 1,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "frequency": "yearly",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      +
                                      "description": "The number of people receiving an official salary with government reporting."                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
                                  }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
@@ -558,7 +558,7 @@ SELECT jsonb_pretty(
                                      "name": "Turnover",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         +
                                      "type": "int",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "archived": false,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          +
-                                     "priority": 3,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
+                                     "priority": 2,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "frequency": "yearly",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      +
                                      "description": "The amount (EUR)"                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           +
                                  }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
@@ -658,7 +658,7 @@ SELECT jsonb_pretty(
                                      "name": "Number of people employed",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        +
                                      "type": "int",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "archived": false,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          +
-                                     "priority": 2,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
+                                     "priority": 1,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "frequency": "yearly",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      +
                                      "description": "The number of people receiving an official salary with government reporting."                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
                                  }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
@@ -673,7 +673,7 @@ SELECT jsonb_pretty(
                                      "name": "Turnover",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         +
                                      "type": "int",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "archived": false,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          +
-                                     "priority": 3,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
+                                     "priority": 2,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "frequency": "yearly",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      +
                                      "description": "The amount (EUR)"                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           +
                                  }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
@@ -1015,7 +1015,7 @@ SELECT jsonb_pretty(
                                      "name": "Number of people employed",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        +
                                      "type": "int",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "archived": false,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          +
-                                     "priority": 2,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
+                                     "priority": 1,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "frequency": "yearly",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      +
                                      "description": "The number of people receiving an official salary with government reporting."                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
                                  }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
@@ -1030,7 +1030,7 @@ SELECT jsonb_pretty(
                                      "name": "Turnover",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         +
                                      "type": "int",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "archived": false,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          +
-                                     "priority": 3,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
+                                     "priority": 2,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "frequency": "yearly",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      +
                                      "description": "The amount (EUR)"                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           +
                                  }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
@@ -1230,7 +1230,7 @@ SELECT jsonb_pretty(
                                      "name": "Number of people employed",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        +
                                      "type": "int",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "archived": false,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          +
-                                     "priority": 2,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
+                                     "priority": 1,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "frequency": "yearly",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      +
                                      "description": "The number of people receiving an official salary with government reporting."                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
                                  }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
@@ -1245,7 +1245,7 @@ SELECT jsonb_pretty(
                                      "name": "Turnover",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         +
                                      "type": "int",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "archived": false,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          +
-                                     "priority": 3,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
+                                     "priority": 2,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "frequency": "yearly",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      +
                                      "description": "The amount (EUR)"                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           +
                                  }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
@@ -1345,7 +1345,7 @@ SELECT jsonb_pretty(
                                      "name": "Number of people employed",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        +
                                      "type": "int",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "archived": false,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          +
-                                     "priority": 2,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
+                                     "priority": 1,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "frequency": "yearly",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      +
                                      "description": "The number of people receiving an official salary with government reporting."                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
                                  }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
@@ -1360,7 +1360,7 @@ SELECT jsonb_pretty(
                                      "name": "Turnover",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         +
                                      "type": "int",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "archived": false,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          +
-                                     "priority": 3,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
+                                     "priority": 2,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              +
                                      "frequency": "yearly",                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      +
                                      "description": "The amount (EUR)"                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           +
                                  }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               +
diff --git a/test/expected/40_history_legal_units_changes_over_time.out b/test/expected/40_history_legal_units_changes_over_time.out
new file mode 100644
index 000000000..de9475325
--- /dev/null
+++ b/test/expected/40_history_legal_units_changes_over_time.out
@@ -0,0 +1,392 @@
+SET datestyle TO 'ISO, DMY';
+BEGIN;
+\echo "Setting up Statbus to test enterprise grouping and primary"
+"Setting up Statbus to test enterprise grouping and primary"
+\echo "User selected the Activity Category Standard"
+"User selected the Activity Category Standard"
+INSERT INTO settings(activity_category_standard_id,only_one_setting)
+SELECT id, true FROM activity_category_standard WHERE code = 'nace_v2.1'
+ON CONFLICT (only_one_setting)
+DO UPDATE SET
+   activity_category_standard_id =(SELECT id FROM activity_category_standard WHERE code = 'nace_v2.1')
+   WHERE settings.id = EXCLUDED.id;
+;
+SELECT acs.code
+  FROM public.settings AS s
+  JOIN activity_category_standard AS acs
+    ON s.activity_category_standard_id = acs.id;
+   code    
+-----------
+ nace_v2.1
+(1 row)
+
+\echo "User uploads the sample activity categories"
+"User uploads the sample activity categories"
+\copy public.activity_category_available_custom(path,name,description) FROM 'app/public/activity_category_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.activity_category_available;
+ count 
+-------
+  2215
+(1 row)
+
+\echo "User uploads the sample regions"
+"User uploads the sample regions"
+\copy public.region_upload(path, name) FROM 'app/public/norway-regions-2024.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.region;
+ count 
+-------
+   417
+(1 row)
+
+\echo "User uploads the sample legal forms"
+"User uploads the sample legal forms"
+\copy public.legal_form_custom_only(code,name) FROM 'app/public/legal_form_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.legal_form_available;
+ count 
+-------
+    46
+(1 row)
+
+\echo "User uploads the sample sectors"
+"User uploads the sample sectors"
+\copy public.sector_custom_only(path,name,description) FROM 'app/public/sector_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.sector_available;
+ count 
+-------
+    33
+(1 row)
+
+SAVEPOINT before_loading_units;
+\echo "Test sector changes in the middle of a month"
+"Test sector changes in the middle of a month"
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                0 |                0
+(1 row)
+
+\echo "User uploads the legal units"
+"User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/40_legal-units-sector-change-middle-of-month.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                1 |                1
+(1 row)
+
+\echo "Refreshing materialized views"
+"Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+         view_name         
+---------------------------
+ statistical_unit
+ activity_category_used
+ region_used
+ sector_used
+ legal_form_used
+ country_used
+ statistical_unit_facet
+ statistical_history
+ statistical_history_facet
+(9 rows)
+
+\echo "Check sector for legal units over time"
+"Check sector for legal units over time"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, sector_code
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+ tax_ident |       name        | valid_after | valid_from |  valid_to  | sector_code 
+-----------+-------------------+-------------+------------+------------+-------------
+ 823573673 | Kranløft Vestland | 2009-12-31  | 2010-01-01 | 2011-01-14 | 2100
+ 823573673 | Kranløft Vestland | 2011-01-14  | 2011-01-15 | infinity   | 8200
+(2 rows)
+
+\echo "Test statistical unit history by year - sector_change_count should be 1 for year 2011"
+"Test statistical unit history by year - sector_change_count should be 1 for year 2011"
+SELECT resolution, year, unit_type, count, births, deaths, sector_change_count
+FROM public.statistical_history
+WHERE resolution = 'year'
+AND year < 2013
+AND unit_type = 'legal_unit';
+ resolution | year | unit_type  | count | births | deaths | sector_change_count 
+------------+------+------------+-------+--------+--------+---------------------
+ year       | 2010 | legal_unit |     1 |      1 |      0 |                   0
+ year       | 2011 | legal_unit |     1 |      0 |      0 |                   1
+ year       | 2012 | legal_unit |     1 |      0 |      0 |                   0
+(3 rows)
+
+\echo "Test statistical unit history by year-month - sector_change_count should be 1 for year-month 2011-1"
+"Test statistical unit history by year-month - sector_change_count should be 1 for year-month 2011-1"
+SELECT resolution, year, month, unit_type, count, births, deaths, sector_change_count
+FROM public.statistical_history
+WHERE resolution = 'year-month'
+AND year < 2013
+AND unit_type = 'legal_unit';
+ resolution | year | month | unit_type  | count | births | deaths | sector_change_count 
+------------+------+-------+------------+-------+--------+--------+---------------------
+ year-month | 2010 |     1 | legal_unit |     1 |      1 |      0 |                   0
+ year-month | 2010 |     2 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     3 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     4 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     5 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     6 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     7 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     8 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     9 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |    10 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |    11 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |    12 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     1 | legal_unit |     1 |      0 |      0 |                   1
+ year-month | 2011 |     2 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     3 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     4 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     5 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     6 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     7 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     8 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     9 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |    10 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |    11 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |    12 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |     1 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |     2 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |     3 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |     4 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |     5 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |     6 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |     7 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |     8 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |     9 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |    10 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |    11 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |    12 | legal_unit |     1 |      0 |      0 |                   0
+(36 rows)
+
+\x
+ROLLBACK TO before_loading_units;
+\echo "Test sector changes at the start of the second month"
+"Test sector changes at the start of the second month"
+\x
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                0 |                0
+(1 row)
+
+\echo "User uploads the legal units"
+"User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/40_legal-units-sector-change-start-of-second-month.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                1 |                1
+(1 row)
+
+\echo "Refreshing materialized views"
+"Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+         view_name         
+---------------------------
+ statistical_unit
+ activity_category_used
+ region_used
+ sector_used
+ legal_form_used
+ country_used
+ statistical_unit_facet
+ statistical_history
+ statistical_history_facet
+(9 rows)
+
+\echo "Check sector for legal units over time"
+"Check sector for legal units over time"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, sector_code
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+ tax_ident |       name        | valid_after | valid_from |  valid_to  | sector_code 
+-----------+-------------------+-------------+------------+------------+-------------
+ 823573673 | Kranløft Vestland | 2009-12-31  | 2010-01-01 | 2011-01-31 | 2100
+ 823573673 | Kranløft Vestland | 2011-01-31  | 2011-02-01 | infinity   | 8200
+(2 rows)
+
+\echo "Check statistical unit history by year - sector_change_count should be 1 for year 2011"
+"Check statistical unit history by year - sector_change_count should be 1 for year 2011"
+SELECT resolution, year,month, unit_type, count, births, deaths, sector_change_count
+FROM public.statistical_history
+WHERE resolution = 'year'
+AND year < 2012
+AND unit_type = 'legal_unit';
+ resolution | year | month | unit_type  | count | births | deaths | sector_change_count 
+------------+------+-------+------------+-------+--------+--------+---------------------
+ year       | 2010 |       | legal_unit |     1 |      1 |      0 |                   0
+ year       | 2011 |       | legal_unit |     1 |      0 |      0 |                   1
+(2 rows)
+
+\echo "Check statistical unit history by year-month - sector_change_count should be 1 for year-month 2011-2"
+"Check statistical unit history by year-month - sector_change_count should be 1 for year-month 2011-2"
+SELECT resolution, year, month, unit_type, count, births, deaths, sector_change_count
+FROM public.statistical_history
+WHERE resolution = 'year-month'
+AND year < 2012
+AND unit_type = 'legal_unit';
+ resolution | year | month | unit_type  | count | births | deaths | sector_change_count 
+------------+------+-------+------------+-------+--------+--------+---------------------
+ year-month | 2010 |     1 | legal_unit |     1 |      1 |      0 |                   0
+ year-month | 2010 |     2 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     3 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     4 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     5 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     6 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     7 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     8 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     9 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |    10 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |    11 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |    12 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     1 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     2 | legal_unit |     1 |      0 |      0 |                   1
+ year-month | 2011 |     3 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     4 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     5 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     6 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     7 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     8 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     9 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |    10 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |    11 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |    12 | legal_unit |     1 |      0 |      0 |                   0
+(24 rows)
+
+\x
+ROLLBACK TO before_loading_units;
+\echo "Test sector changes at the start of the year"
+"Test sector changes at the start of the year"
+\x
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                0 |                0
+(1 row)
+
+\echo "User uploads the legal units"
+"User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/40_legal-units-sector-change-start-of-year.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                1 |                1
+(1 row)
+
+\echo "Refreshing materialized views"
+"Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+         view_name         
+---------------------------
+ statistical_unit
+ activity_category_used
+ region_used
+ sector_used
+ legal_form_used
+ country_used
+ statistical_unit_facet
+ statistical_history
+ statistical_history_facet
+(9 rows)
+
+\echo "Check sector for legal units over time"
+"Check sector for legal units over time"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, sector_code
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+ tax_ident |       name        | valid_after | valid_from |  valid_to  | sector_code 
+-----------+-------------------+-------------+------------+------------+-------------
+ 823573673 | Kranløft Vestland | 2009-12-31  | 2010-01-01 | 2010-12-31 | 2100
+ 823573673 | Kranløft Vestland | 2010-12-31  | 2011-01-01 | 2011-12-31 | 7000
+ 823573673 | Kranløft Vestland | 2011-12-31  | 2012-01-01 | infinity   | 8200
+(3 rows)
+
+\echo "Check statistical unit history by year - sector_change_count should be 1 for year 2011 and 2012"
+"Check statistical unit history by year - sector_change_count should be 1 for year 2011 and 2012"
+SELECT resolution, year,month, unit_type, count, births, deaths, sector_change_count
+FROM public.statistical_history
+WHERE resolution = 'year'
+AND year < 2014
+AND unit_type = 'legal_unit';
+ resolution | year | month | unit_type  | count | births | deaths | sector_change_count 
+------------+------+-------+------------+-------+--------+--------+---------------------
+ year       | 2010 |       | legal_unit |     1 |      1 |      0 |                   0
+ year       | 2011 |       | legal_unit |     1 |      0 |      0 |                   1
+ year       | 2012 |       | legal_unit |     1 |      0 |      0 |                   1
+ year       | 2013 |       | legal_unit |     1 |      0 |      0 |                   0
+(4 rows)
+
+\echo "Check statistical unit history by year-month - sector_change_count should be 1 for year-month 2011-1 and 2012-1"
+"Check statistical unit history by year-month - sector_change_count should be 1 for year-month 2011-1 and 2012-1"
+SELECT resolution, year, month, unit_type, count, births, deaths, sector_change_count
+FROM public.statistical_history
+WHERE resolution = 'year-month'
+AND year < 2013
+AND unit_type = 'legal_unit';
+ resolution | year | month | unit_type  | count | births | deaths | sector_change_count 
+------------+------+-------+------------+-------+--------+--------+---------------------
+ year-month | 2010 |     1 | legal_unit |     1 |      1 |      0 |                   0
+ year-month | 2010 |     2 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     3 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     4 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     5 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     6 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     7 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     8 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |     9 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |    10 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |    11 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2010 |    12 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     1 | legal_unit |     1 |      0 |      0 |                   1
+ year-month | 2011 |     2 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     3 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     4 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     5 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     6 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     7 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     8 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |     9 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |    10 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |    11 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2011 |    12 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |     1 | legal_unit |     1 |      0 |      0 |                   1
+ year-month | 2012 |     2 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |     3 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |     4 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |     5 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |     6 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |     7 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |     8 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |     9 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |    10 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |    11 | legal_unit |     1 |      0 |      0 |                   0
+ year-month | 2012 |    12 | legal_unit |     1 |      0 |      0 |                   0
+(36 rows)
+
+\x
+ROLLBACK;
diff --git a/test/expected/41_history_legal_units_births.out b/test/expected/41_history_legal_units_births.out
new file mode 100644
index 000000000..196fe67d4
--- /dev/null
+++ b/test/expected/41_history_legal_units_births.out
@@ -0,0 +1,402 @@
+SET datestyle TO 'ISO, DMY';
+BEGIN;
+\echo "Setting up Statbus to test enterprise grouping and primary"
+"Setting up Statbus to test enterprise grouping and primary"
+\echo "User selected the Activity Category Standard"
+"User selected the Activity Category Standard"
+INSERT INTO settings(activity_category_standard_id,only_one_setting)
+SELECT id, true FROM activity_category_standard WHERE code = 'nace_v2.1'
+ON CONFLICT (only_one_setting)
+DO UPDATE SET
+   activity_category_standard_id =(SELECT id FROM activity_category_standard WHERE code = 'nace_v2.1')
+   WHERE settings.id = EXCLUDED.id;
+;
+SELECT acs.code
+  FROM public.settings AS s
+  JOIN activity_category_standard AS acs
+    ON s.activity_category_standard_id = acs.id;
+   code    
+-----------
+ nace_v2.1
+(1 row)
+
+\echo "User uploads the sample activity categories"
+"User uploads the sample activity categories"
+\copy public.activity_category_available_custom(path,name,description) FROM 'app/public/activity_category_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.activity_category_available;
+ count 
+-------
+  2215
+(1 row)
+
+\echo "User uploads the sample regions"
+"User uploads the sample regions"
+\copy public.region_upload(path, name) FROM 'app/public/norway-regions-2024.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.region;
+ count 
+-------
+   417
+(1 row)
+
+\echo "User uploads the sample legal forms"
+"User uploads the sample legal forms"
+\copy public.legal_form_custom_only(code,name) FROM 'app/public/legal_form_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.legal_form_available;
+ count 
+-------
+    46
+(1 row)
+
+\echo "User uploads the sample sectors"
+"User uploads the sample sectors"
+\copy public.sector_custom_only(path,name,description) FROM 'app/public/sector_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.sector_available;
+ count 
+-------
+    33
+(1 row)
+
+SAVEPOINT before_loading_units;
+\echo "Test births at the start of the year"
+"Test births at the start of the year"
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                0 |                0
+(1 row)
+
+\echo "User uploads the legal units"
+"User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/41_legal-units-births-start-of-year.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                2 |                2
+(1 row)
+
+\echo "Refreshing materialized views"
+"Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+         view_name         
+---------------------------
+ statistical_unit
+ activity_category_used
+ region_used
+ sector_used
+ legal_form_used
+ country_used
+ statistical_unit_facet
+ statistical_history
+ statistical_history_facet
+(9 rows)
+
+\echo "Check legal units over time"
+"Check legal units over time"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, birth_date, death_date
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+ tax_ident |       name        | valid_after | valid_from | valid_to | birth_date | death_date 
+-----------+-------------------+-------------+------------+----------+------------+------------
+ 823573673 | Kranløft Vestland | 2009-12-31  | 2010-01-01 | infinity | 2010-01-01 | 
+ 921835809 | Kranløft Østland  | 2010-12-31  | 2011-01-01 | infinity | 2011-01-01 | 
+(2 rows)
+
+\echo "Check statistical unit history by year - births should be 1 for year 2010 and 2011"
+"Check statistical unit history by year - births should be 1 for year 2010 and 2011"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year'
+AND year < 2013
+AND unit_type = 'legal_unit';
+ resolution | year | month | unit_type  | count | births | deaths 
+------------+------+-------+------------+-------+--------+--------
+ year       | 2010 |       | legal_unit |     1 |      1 |      0
+ year       | 2011 |       | legal_unit |     2 |      1 |      0
+ year       | 2012 |       | legal_unit |     2 |      0 |      0
+(3 rows)
+
+\echo "Check statistical unit history by year-month - births should be 1 for year-month 2010-1 and 2011-1"
+"Check statistical unit history by year-month - births should be 1 for year-month 2010-1 and 2011-1"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year-month'
+AND year < 2013
+AND unit_type = 'legal_unit';
+ resolution | year | month | unit_type  | count | births | deaths 
+------------+------+-------+------------+-------+--------+--------
+ year-month | 2010 |     1 | legal_unit |     1 |      1 |      0
+ year-month | 2010 |     2 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     3 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     4 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     5 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     6 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     7 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     8 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     9 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |    10 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |    11 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |    12 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     1 | legal_unit |     2 |      1 |      0
+ year-month | 2011 |     2 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     3 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     4 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     5 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     6 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     7 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     8 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     9 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |    10 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |    11 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |    12 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     1 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     2 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     3 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     4 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     5 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     6 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     7 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     8 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     9 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |    10 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |    11 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |    12 | legal_unit |     2 |      0 |      0
+(36 rows)
+
+\x
+ROLLBACK TO before_loading_units;
+\echo "Test births at the start of the second month"
+"Test births at the start of the second month"
+\x
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                0 |                0
+(1 row)
+
+\echo "User uploads the legal units"
+"User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/41_legal-units-births-start-of-second-month.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                2 |                2
+(1 row)
+
+\echo "Refreshing materialized views"
+"Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+         view_name         
+---------------------------
+ statistical_unit
+ activity_category_used
+ region_used
+ sector_used
+ legal_form_used
+ country_used
+ statistical_unit_facet
+ statistical_history
+ statistical_history_facet
+(9 rows)
+
+\echo "Check legal units over time"
+"Check legal units over time"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, birth_date, death_date
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+ tax_ident |       name        | valid_after | valid_from | valid_to | birth_date | death_date 
+-----------+-------------------+-------------+------------+----------+------------+------------
+ 823573673 | Kranløft Vestland | 2010-01-31  | 2010-02-01 | infinity | 2010-02-01 | 
+ 921835809 | Kranløft Østland  | 2011-01-31  | 2011-02-01 | infinity | 2011-02-01 | 
+(2 rows)
+
+\echo "Check statistical unit history by year - births should be 1 for year 2010 and 2011"
+"Check statistical unit history by year - births should be 1 for year 2010 and 2011"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year'
+AND year < 2013
+AND unit_type = 'legal_unit';
+ resolution | year | month | unit_type  | count | births | deaths 
+------------+------+-------+------------+-------+--------+--------
+ year       | 2010 |       | legal_unit |     1 |      1 |      0
+ year       | 2011 |       | legal_unit |     2 |      1 |      0
+ year       | 2012 |       | legal_unit |     2 |      0 |      0
+(3 rows)
+
+\echo "Check statistical unit history by year-month - births should be 1 for year-month 2010-2 and 2011-2"
+"Check statistical unit history by year-month - births should be 1 for year-month 2010-2 and 2011-2"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year-month'
+AND year < 2013
+AND unit_type = 'legal_unit';
+ resolution | year | month | unit_type  | count | births | deaths 
+------------+------+-------+------------+-------+--------+--------
+ year-month | 2010 |     2 | legal_unit |     1 |      1 |      0
+ year-month | 2010 |     3 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     4 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     5 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     6 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     7 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     8 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     9 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |    10 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |    11 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |    12 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     1 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     2 | legal_unit |     2 |      1 |      0
+ year-month | 2011 |     3 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     4 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     5 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     6 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     7 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     8 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     9 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |    10 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |    11 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |    12 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     1 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     2 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     3 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     4 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     5 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     6 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     7 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     8 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     9 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |    10 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |    11 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |    12 | legal_unit |     2 |      0 |      0
+(35 rows)
+
+\x
+ROLLBACK TO before_loading_units;
+\echo "Test births in the middle of a month"
+"Test births in the middle of a month"
+\x
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                0 |                0
+(1 row)
+
+\echo "User uploads the legal units"
+"User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/41_legal-units-births-middle-of-month.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                2 |                2
+(1 row)
+
+\echo "Refreshing materialized views"
+"Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+         view_name         
+---------------------------
+ statistical_unit
+ activity_category_used
+ region_used
+ sector_used
+ legal_form_used
+ country_used
+ statistical_unit_facet
+ statistical_history
+ statistical_history_facet
+(9 rows)
+
+\echo "Check legal units over time"
+"Check legal units over time"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, birth_date, death_date
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+ tax_ident |       name        | valid_after | valid_from | valid_to | birth_date | death_date 
+-----------+-------------------+-------------+------------+----------+------------+------------
+ 823573673 | Kranløft Vestland | 2010-01-14  | 2010-01-15 | infinity | 2010-01-15 | 
+ 921835809 | Kranløft Østland  | 2011-01-14  | 2011-01-15 | infinity | 2011-01-15 | 
+(2 rows)
+
+\echo "Check statistical unit history by year - births should be 1 for year 2010 and 2011"
+"Check statistical unit history by year - births should be 1 for year 2010 and 2011"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year'
+AND year < 2013
+AND unit_type = 'legal_unit';
+ resolution | year | month | unit_type  | count | births | deaths 
+------------+------+-------+------------+-------+--------+--------
+ year       | 2010 |       | legal_unit |     1 |      1 |      0
+ year       | 2011 |       | legal_unit |     2 |      1 |      0
+ year       | 2012 |       | legal_unit |     2 |      0 |      0
+(3 rows)
+
+\echo "Check statistical unit history by year-month - births should be 1 for year-month 2010-1 and 2011-1"
+"Check statistical unit history by year-month - births should be 1 for year-month 2010-1 and 2011-1"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year-month'
+AND year < 2013
+AND unit_type = 'legal_unit';
+ resolution | year | month | unit_type  | count | births | deaths 
+------------+------+-------+------------+-------+--------+--------
+ year-month | 2010 |     1 | legal_unit |     1 |      1 |      0
+ year-month | 2010 |     2 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     3 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     4 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     5 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     6 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     7 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     8 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |     9 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |    10 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |    11 | legal_unit |     1 |      0 |      0
+ year-month | 2010 |    12 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     1 | legal_unit |     2 |      1 |      0
+ year-month | 2011 |     2 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     3 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     4 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     5 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     6 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     7 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     8 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     9 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |    10 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |    11 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |    12 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     1 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     2 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     3 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     4 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     5 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     6 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     7 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     8 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |     9 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |    10 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |    11 | legal_unit |     2 |      0 |      0
+ year-month | 2012 |    12 | legal_unit |     2 |      0 |      0
+(36 rows)
+
+\x
+ROLLBACK;
diff --git a/test/expected/42_history_legal_units_deaths.out b/test/expected/42_history_legal_units_deaths.out
new file mode 100644
index 000000000..d0bc637cc
--- /dev/null
+++ b/test/expected/42_history_legal_units_deaths.out
@@ -0,0 +1,396 @@
+SET datestyle TO 'ISO, DMY';
+BEGIN;
+\echo "Setting up Statbus to test enterprise grouping and primary"
+"Setting up Statbus to test enterprise grouping and primary"
+\echo "User selected the Activity Category Standard"
+"User selected the Activity Category Standard"
+INSERT INTO settings(activity_category_standard_id,only_one_setting)
+SELECT id, true FROM activity_category_standard WHERE code = 'nace_v2.1'
+ON CONFLICT (only_one_setting)
+DO UPDATE SET
+   activity_category_standard_id =(SELECT id FROM activity_category_standard WHERE code = 'nace_v2.1')
+   WHERE settings.id = EXCLUDED.id;
+;
+SELECT acs.code
+  FROM public.settings AS s
+  JOIN activity_category_standard AS acs
+    ON s.activity_category_standard_id = acs.id;
+   code    
+-----------
+ nace_v2.1
+(1 row)
+
+\echo "User uploads the sample activity categories"
+"User uploads the sample activity categories"
+\copy public.activity_category_available_custom(path,name,description) FROM 'app/public/activity_category_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.activity_category_available;
+ count 
+-------
+  2215
+(1 row)
+
+\echo "User uploads the sample regions"
+"User uploads the sample regions"
+\copy public.region_upload(path, name) FROM 'app/public/norway-regions-2024.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.region;
+ count 
+-------
+   417
+(1 row)
+
+\echo "User uploads the sample legal forms"
+"User uploads the sample legal forms"
+\copy public.legal_form_custom_only(code,name) FROM 'app/public/legal_form_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.legal_form_available;
+ count 
+-------
+    46
+(1 row)
+
+\echo "User uploads the sample sectors"
+"User uploads the sample sectors"
+\copy public.sector_custom_only(path,name,description) FROM 'app/public/sector_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.sector_available;
+ count 
+-------
+    33
+(1 row)
+
+SAVEPOINT before_loading_units;
+\echo "Test deaths at the end of the year"
+"Test deaths at the end of the year"
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                0 |                0
+(1 row)
+
+\echo "User uploads the legal units"
+"User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/42_legal-units-deaths-end-of-year.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                2 |                2
+(1 row)
+
+\echo "Refreshing materialized views"
+"Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+         view_name         
+---------------------------
+ statistical_unit
+ activity_category_used
+ region_used
+ sector_used
+ legal_form_used
+ country_used
+ statistical_unit_facet
+ statistical_history
+ statistical_history_facet
+(9 rows)
+
+\echo "Check statistical units"
+"Check statistical units"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, birth_date, death_date
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+ tax_ident |       name        | valid_after | valid_from |  valid_to  | birth_date | death_date 
+-----------+-------------------+-------------+------------+------------+------------+------------
+ 823573673 | Kranløft Vestland | 2009-12-31  | 2010-01-01 | 2012-12-30 | 2010-01-01 | 
+ 823573673 | Kranløft Vestland | 2012-12-30  | 2012-12-31 | 2012-12-31 | 2010-01-01 | 2012-12-31
+ 921835809 | Kranløft Østland  | 2009-12-31  | 2010-01-01 | 2011-12-30 | 2010-01-01 | 
+ 921835809 | Kranløft Østland  | 2011-12-30  | 2011-12-31 | 2011-12-31 | 2010-01-01 | 2011-12-31
+(4 rows)
+
+\echo "Check statistical unit history by year - deaths should be 1 for year 2011 and 2012"
+"Check statistical unit history by year - deaths should be 1 for year 2011 and 2012"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year' 
+AND year < 2013
+AND unit_type = 'legal_unit';
+ resolution | year | month | unit_type  | count | births | deaths 
+------------+------+-------+------------+-------+--------+--------
+ year       | 2010 |       | legal_unit |     2 |      2 |      0
+ year       | 2011 |       | legal_unit |     1 |      0 |      1
+ year       | 2012 |       | legal_unit |     0 |      0 |      1
+(3 rows)
+
+\echo "Check statistical unit history by year-month - deaths should be 1 for year-month 2011-12 and 2012-12"
+"Check statistical unit history by year-month - deaths should be 1 for year-month 2011-12 and 2012-12"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year-month' 
+AND year < 2013
+AND unit_type = 'legal_unit';
+ resolution | year | month | unit_type  | count | births | deaths 
+------------+------+-------+------------+-------+--------+--------
+ year-month | 2010 |     1 | legal_unit |     2 |      2 |      0
+ year-month | 2010 |     2 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     3 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     4 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     5 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     6 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     7 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     8 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     9 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |    10 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |    11 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |    12 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     1 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     2 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     3 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     4 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     5 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     6 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     7 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     8 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     9 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |    10 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |    11 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |    12 | legal_unit |     1 |      0 |      1
+ year-month | 2012 |     1 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     2 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     3 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     4 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     5 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     6 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     7 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     8 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     9 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |    10 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |    11 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |    12 | legal_unit |     0 |      0 |      1
+(36 rows)
+
+\x
+ROLLBACK TO before_loading_units;
+\echo "Test deaths at the end of the first month"
+"Test deaths at the end of the first month"
+\x
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                0 |                0
+(1 row)
+
+\echo "User uploads the legal units"
+"User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/42_legal-units-deaths-end-of-first-month.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                2 |                2
+(1 row)
+
+\echo "Refreshing materialized views"
+"Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+         view_name         
+---------------------------
+ statistical_unit
+ activity_category_used
+ region_used
+ sector_used
+ legal_form_used
+ country_used
+ statistical_unit_facet
+ statistical_history
+ statistical_history_facet
+(9 rows)
+
+\echo "Check statistical units"
+"Check statistical units"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, birth_date, death_date
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+ tax_ident |       name        | valid_after | valid_from |  valid_to  | birth_date | death_date 
+-----------+-------------------+-------------+------------+------------+------------+------------
+ 823573673 | Kranløft Vestland | 2009-12-31  | 2010-01-01 | 2012-12-30 | 2010-01-01 | 
+ 823573673 | Kranløft Vestland | 2012-12-30  | 2012-12-31 | 2012-12-31 | 2010-01-01 | 2012-12-31
+ 921835809 | Kranløft Østland  | 2009-12-31  | 2010-01-01 | 2011-01-31 | 2010-01-01 | 2011-01-31
+(3 rows)
+
+\echo "Check statistical unit history by year - deaths should be 1 for year 2011 and 2012"
+"Check statistical unit history by year - deaths should be 1 for year 2011 and 2012"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year' 
+AND year < 2013
+AND unit_type = 'legal_unit';
+ resolution | year | month | unit_type  | count | births | deaths 
+------------+------+-------+------------+-------+--------+--------
+ year       | 2010 |       | legal_unit |     2 |      2 |      0
+ year       | 2011 |       | legal_unit |     1 |      0 |      1
+ year       | 2012 |       | legal_unit |     0 |      0 |      1
+(3 rows)
+
+\echo "Check statistical unit history by year-month - deaths should be 1 for year-month 2011-1 and 2012-12"
+"Check statistical unit history by year-month - deaths should be 1 for year-month 2011-1 and 2012-12"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year-month' 
+AND year < 2013
+AND unit_type = 'legal_unit';
+ resolution | year | month | unit_type  | count | births | deaths 
+------------+------+-------+------------+-------+--------+--------
+ year-month | 2010 |     1 | legal_unit |     2 |      2 |      0
+ year-month | 2010 |     2 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     3 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     4 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     5 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     6 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     7 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     8 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     9 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |    10 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |    11 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |    12 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     1 | legal_unit |     1 |      0 |      1
+ year-month | 2011 |     2 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     3 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     4 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     5 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     6 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     7 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     8 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     9 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |    10 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |    11 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |    12 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     1 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     2 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     3 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     4 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     5 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     6 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     7 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     8 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     9 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |    10 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |    11 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |    12 | legal_unit |     0 |      0 |      1
+(36 rows)
+
+\x
+ROLLBACK TO before_loading_units;
+\echo "Test deaths in the start of a month"
+"Test deaths in the start of a month"
+\x
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                0 |                0
+(1 row)
+
+\echo "User uploads the legal units"
+"User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/42_legal-units-deaths-start-of-month.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+ establishment_count | legal_unit_count | enterprise_count 
+---------------------+------------------+------------------
+                   0 |                2 |                2
+(1 row)
+
+\echo "Refreshing materialized views"
+"Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+         view_name         
+---------------------------
+ statistical_unit
+ activity_category_used
+ region_used
+ sector_used
+ legal_form_used
+ country_used
+ statistical_unit_facet
+ statistical_history
+ statistical_history_facet
+(9 rows)
+
+\echo "Check statistical units"
+"Check statistical units"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, birth_date, death_date
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+ tax_ident |       name        | valid_after | valid_from |  valid_to  | birth_date | death_date 
+-----------+-------------------+-------------+------------+------------+------------+------------
+ 823573673 | Kranløft Vestland | 2009-12-31  | 2010-01-01 | 2011-12-31 | 2010-01-01 | 
+ 823573673 | Kranløft Vestland | 2011-12-31  | 2012-01-01 | 2012-01-01 | 2010-01-01 | 2012-01-01
+ 921835809 | Kranløft Østland  | 2009-12-31  | 2010-01-01 | 2011-01-01 | 2010-01-01 | 2011-01-01
+(3 rows)
+
+\echo "Check statistical unit history by year - deaths should be 1 for year 2011 and 2012"
+"Check statistical unit history by year - deaths should be 1 for year 2011 and 2012"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year' 
+AND year < 2013
+AND unit_type = 'legal_unit';
+ resolution | year | month | unit_type  | count | births | deaths 
+------------+------+-------+------------+-------+--------+--------
+ year       | 2010 |       | legal_unit |     2 |      2 |      0
+ year       | 2011 |       | legal_unit |     1 |      0 |      1
+ year       | 2012 |       | legal_unit |     0 |      0 |      1
+(3 rows)
+
+\echo "Check statistical unit history by year-month - deaths should be 1 for year-month 2011-1 and 2012-1"
+"Check statistical unit history by year-month - deaths should be 1 for year-month 2011-1 and 2012-1"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year-month' 
+AND year < 2013
+AND unit_type = 'legal_unit';
+ resolution | year | month | unit_type  | count | births | deaths 
+------------+------+-------+------------+-------+--------+--------
+ year-month | 2010 |     1 | legal_unit |     2 |      2 |      0
+ year-month | 2010 |     2 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     3 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     4 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     5 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     6 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     7 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     8 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |     9 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |    10 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |    11 | legal_unit |     2 |      0 |      0
+ year-month | 2010 |    12 | legal_unit |     2 |      0 |      0
+ year-month | 2011 |     1 | legal_unit |     1 |      0 |      1
+ year-month | 2011 |     2 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     3 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     4 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     5 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     6 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     7 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     8 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |     9 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |    10 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |    11 | legal_unit |     1 |      0 |      0
+ year-month | 2011 |    12 | legal_unit |     1 |      0 |      0
+ year-month | 2012 |     1 | legal_unit |     0 |      0 |      1
+(25 rows)
+
+\x
+ROLLBACK;
diff --git a/test/sql/40_history_legal_units_changes_over_time.sql b/test/sql/40_history_legal_units_changes_over_time.sql
new file mode 100644
index 000000000..a0cd51882
--- /dev/null
+++ b/test/sql/40_history_legal_units_changes_over_time.sql
@@ -0,0 +1,174 @@
+SET datestyle TO 'ISO, DMY';
+
+BEGIN;
+
+\echo "Setting up Statbus to test enterprise grouping and primary"
+
+\echo "User selected the Activity Category Standard"
+INSERT INTO settings(activity_category_standard_id,only_one_setting)
+SELECT id, true FROM activity_category_standard WHERE code = 'nace_v2.1'
+ON CONFLICT (only_one_setting)
+DO UPDATE SET
+   activity_category_standard_id =(SELECT id FROM activity_category_standard WHERE code = 'nace_v2.1')
+   WHERE settings.id = EXCLUDED.id;
+;
+SELECT acs.code
+  FROM public.settings AS s
+  JOIN activity_category_standard AS acs
+    ON s.activity_category_standard_id = acs.id;
+
+\echo "User uploads the sample activity categories"
+\copy public.activity_category_available_custom(path,name,description) FROM 'app/public/activity_category_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.activity_category_available;
+
+\echo "User uploads the sample regions"
+\copy public.region_upload(path, name) FROM 'app/public/norway-regions-2024.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.region;
+
+\echo "User uploads the sample legal forms"
+\copy public.legal_form_custom_only(code,name) FROM 'app/public/legal_form_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.legal_form_available;
+
+\echo "User uploads the sample sectors"
+\copy public.sector_custom_only(path,name,description) FROM 'app/public/sector_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.sector_available;
+
+SAVEPOINT before_loading_units;
+
+\echo "Test sector changes in the middle of a month"
+
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/40_legal-units-sector-change-middle-of-month.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+
+\echo "Check sector for legal units over time"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, sector_code
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+
+\echo "Test statistical unit history by year - sector_change_count should be 1 for year 2011"
+SELECT resolution, year, unit_type, count, births, deaths, sector_change_count
+FROM public.statistical_history
+WHERE resolution = 'year'
+AND year < 2013
+AND unit_type = 'legal_unit';
+
+
+\echo "Test statistical unit history by year-month - sector_change_count should be 1 for year-month 2011-1"
+SELECT resolution, year, month, unit_type, count, births, deaths, sector_change_count
+FROM public.statistical_history
+WHERE resolution = 'year-month'
+AND year < 2013
+AND unit_type = 'legal_unit';
+
+\x
+
+
+ROLLBACK TO before_loading_units;
+
+\echo "Test sector changes at the start of the second month"
+
+
+\x
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/40_legal-units-sector-change-start-of-second-month.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+
+\echo "Check sector for legal units over time"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, sector_code
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+
+
+\echo "Check statistical unit history by year - sector_change_count should be 1 for year 2011"
+SELECT resolution, year,month, unit_type, count, births, deaths, sector_change_count
+FROM public.statistical_history
+WHERE resolution = 'year'
+AND year < 2012
+AND unit_type = 'legal_unit';
+
+
+
+\echo "Check statistical unit history by year-month - sector_change_count should be 1 for year-month 2011-2"
+SELECT resolution, year, month, unit_type, count, births, deaths, sector_change_count
+FROM public.statistical_history
+WHERE resolution = 'year-month'
+AND year < 2012
+AND unit_type = 'legal_unit';
+
+\x
+
+ROLLBACK TO before_loading_units;
+
+\echo "Test sector changes at the start of the year"
+
+\x
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/40_legal-units-sector-change-start-of-year.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+
+
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+
+
+\echo "Check sector for legal units over time"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, sector_code
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+
+
+\echo "Check statistical unit history by year - sector_change_count should be 1 for year 2011 and 2012"
+SELECT resolution, year,month, unit_type, count, births, deaths, sector_change_count
+FROM public.statistical_history
+WHERE resolution = 'year'
+AND year < 2014
+AND unit_type = 'legal_unit';
+
+
+\echo "Check statistical unit history by year-month - sector_change_count should be 1 for year-month 2011-1 and 2012-1"
+SELECT resolution, year, month, unit_type, count, births, deaths, sector_change_count
+FROM public.statistical_history
+WHERE resolution = 'year-month'
+AND year < 2013
+AND unit_type = 'legal_unit';
+
+\x
+
+ROLLBACK;
\ No newline at end of file
diff --git a/test/sql/41_history_legal_units_births.sql b/test/sql/41_history_legal_units_births.sql
new file mode 100644
index 000000000..8a22c6219
--- /dev/null
+++ b/test/sql/41_history_legal_units_births.sql
@@ -0,0 +1,174 @@
+SET datestyle TO 'ISO, DMY';
+
+BEGIN;
+
+\echo "Setting up Statbus to test enterprise grouping and primary"
+
+\echo "User selected the Activity Category Standard"
+INSERT INTO settings(activity_category_standard_id,only_one_setting)
+SELECT id, true FROM activity_category_standard WHERE code = 'nace_v2.1'
+ON CONFLICT (only_one_setting)
+DO UPDATE SET
+   activity_category_standard_id =(SELECT id FROM activity_category_standard WHERE code = 'nace_v2.1')
+   WHERE settings.id = EXCLUDED.id;
+;
+SELECT acs.code
+  FROM public.settings AS s
+  JOIN activity_category_standard AS acs
+    ON s.activity_category_standard_id = acs.id;
+
+\echo "User uploads the sample activity categories"
+\copy public.activity_category_available_custom(path,name,description) FROM 'app/public/activity_category_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.activity_category_available;
+
+\echo "User uploads the sample regions"
+\copy public.region_upload(path, name) FROM 'app/public/norway-regions-2024.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.region;
+
+\echo "User uploads the sample legal forms"
+\copy public.legal_form_custom_only(code,name) FROM 'app/public/legal_form_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.legal_form_available;
+
+\echo "User uploads the sample sectors"
+\copy public.sector_custom_only(path,name,description) FROM 'app/public/sector_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.sector_available;
+
+SAVEPOINT before_loading_units;
+
+\echo "Test births at the start of the year"
+
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/41_legal-units-births-start-of-year.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+
+
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+
+
+\echo "Check legal units over time"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, birth_date, death_date
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+
+\echo "Check statistical unit history by year - births should be 1 for year 2010 and 2011"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year'
+AND year < 2013
+AND unit_type = 'legal_unit';
+
+
+\echo "Check statistical unit history by year-month - births should be 1 for year-month 2010-1 and 2011-1"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year-month'
+AND year < 2013
+AND unit_type = 'legal_unit';
+
+
+\x
+
+
+ROLLBACK TO before_loading_units;
+
+\echo "Test births at the start of the second month"
+
+\x
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/41_legal-units-births-start-of-second-month.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+
+\echo "Check legal units over time"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, birth_date, death_date
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+
+\echo "Check statistical unit history by year - births should be 1 for year 2010 and 2011"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year'
+AND year < 2013
+AND unit_type = 'legal_unit';
+
+
+\echo "Check statistical unit history by year-month - births should be 1 for year-month 2010-2 and 2011-2"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year-month'
+AND year < 2013
+AND unit_type = 'legal_unit';
+
+
+\x
+
+ROLLBACK TO before_loading_units;
+
+\echo "Test births in the middle of a month"
+
+\x
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/41_legal-units-births-middle-of-month.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+
+
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+
+\echo "Check legal units over time"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, birth_date, death_date
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+
+
+\echo "Check statistical unit history by year - births should be 1 for year 2010 and 2011"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year'
+AND year < 2013
+AND unit_type = 'legal_unit';
+
+
+\echo "Check statistical unit history by year-month - births should be 1 for year-month 2010-1 and 2011-1"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year-month'
+AND year < 2013
+AND unit_type = 'legal_unit';
+
+\x
+
+ROLLBACK;
diff --git a/test/sql/42_history_legal_units_deaths.sql b/test/sql/42_history_legal_units_deaths.sql
new file mode 100644
index 000000000..5486a314d
--- /dev/null
+++ b/test/sql/42_history_legal_units_deaths.sql
@@ -0,0 +1,173 @@
+SET datestyle TO 'ISO, DMY';
+
+BEGIN;
+
+\echo "Setting up Statbus to test enterprise grouping and primary"
+
+\echo "User selected the Activity Category Standard"
+INSERT INTO settings(activity_category_standard_id,only_one_setting)
+SELECT id, true FROM activity_category_standard WHERE code = 'nace_v2.1'
+ON CONFLICT (only_one_setting)
+DO UPDATE SET
+   activity_category_standard_id =(SELECT id FROM activity_category_standard WHERE code = 'nace_v2.1')
+   WHERE settings.id = EXCLUDED.id;
+;
+SELECT acs.code
+  FROM public.settings AS s
+  JOIN activity_category_standard AS acs
+    ON s.activity_category_standard_id = acs.id;
+
+\echo "User uploads the sample activity categories"
+\copy public.activity_category_available_custom(path,name,description) FROM 'app/public/activity_category_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.activity_category_available;
+
+\echo "User uploads the sample regions"
+\copy public.region_upload(path, name) FROM 'app/public/norway-regions-2024.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.region;
+
+\echo "User uploads the sample legal forms"
+\copy public.legal_form_custom_only(code,name) FROM 'app/public/legal_form_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.legal_form_available;
+
+\echo "User uploads the sample sectors"
+\copy public.sector_custom_only(path,name,description) FROM 'app/public/sector_norway.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+SELECT count(*) FROM public.sector_available;
+
+SAVEPOINT before_loading_units;
+
+\echo "Test deaths at the end of the year"
+
+
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/42_legal-units-deaths-end-of-year.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+
+
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+
+\echo "Check statistical units"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, birth_date, death_date
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+
+\echo "Check statistical unit history by year - deaths should be 1 for year 2011 and 2012"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year' 
+AND year < 2013
+AND unit_type = 'legal_unit';
+
+
+\echo "Check statistical unit history by year-month - deaths should be 1 for year-month 2011-12 and 2012-12"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year-month' 
+AND year < 2013
+AND unit_type = 'legal_unit';
+
+
+\x
+
+
+ROLLBACK TO before_loading_units;
+
+\echo "Test deaths at the end of the first month"
+
+\x
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/42_legal-units-deaths-end-of-first-month.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+
+\echo "Check statistical units"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, birth_date, death_date
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+
+\echo "Check statistical unit history by year - deaths should be 1 for year 2011 and 2012"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year' 
+AND year < 2013
+AND unit_type = 'legal_unit';
+
+\echo "Check statistical unit history by year-month - deaths should be 1 for year-month 2011-1 and 2012-12"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year-month' 
+AND year < 2013
+AND unit_type = 'legal_unit';
+
+
+\x
+
+
+ROLLBACK TO before_loading_units;
+
+\echo "Test deaths in the start of a month"
+
+\x
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "User uploads the legal units"
+\copy public.import_legal_unit_era(valid_from,valid_to,tax_ident,name,birth_date,death_date,physical_address_part1,physical_postal_code,physical_postal_place,physical_region_code,physical_country_iso_2,postal_address_part1,postal_postal_code,postal_postal_place,postal_region_code,postal_country_iso_2,primary_activity_category_code,secondary_activity_category_code,sector_code,legal_form_code) FROM 'test/data/42_legal-units-deaths-start-of-month.csv' WITH (FORMAT csv, DELIMITER ',', QUOTE '"', HEADER true);
+
+SELECT
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.establishment) AS establishment_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.legal_unit) AS legal_unit_count,
+    (SELECT COUNT(DISTINCT id) AS distinct_unit_count FROM public.enterprise) AS enterprise_count;
+
+\echo "Refreshing materialized views"
+-- Exclude the refresh_time_ms as it will vary.
+SELECT view_name FROM statistical_unit_refresh_now();
+
+\echo "Check statistical units"
+SELECT external_idents ->> 'tax_ident' as tax_ident, name, valid_after, valid_from, valid_to, birth_date, death_date
+FROM public.statistical_unit
+WHERE unit_type = 'legal_unit';
+
+\echo "Check statistical unit history by year - deaths should be 1 for year 2011 and 2012"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year' 
+AND year < 2013
+AND unit_type = 'legal_unit';
+
+\echo "Check statistical unit history by year-month - deaths should be 1 for year-month 2011-1 and 2012-1"
+SELECT resolution, year, month, unit_type, count, births, deaths
+FROM public.statistical_history
+WHERE resolution = 'year-month' 
+AND year < 2013
+AND unit_type = 'legal_unit';
+
+
+
+\x
+
+ROLLBACK;