README star history because why not

README.md

@@ -1,7 +1,7 @@
 Airports
 ========
 
-A JSON collection of 28k+ entries with basic information about nearly every airport and landing strip in the world. ICAO codes used as keys. Each entry contains IATA code, airport name, city, two-letter ISO country code, elevation above sea level in feet, coordinates in decimal degrees and time zone.
+A JSON collection of ~29k entries with basic information about nearly every airport and landing strip in the world. ICAO codes used as keys. Each entry contains IATA code, airport name, city, two-letter ISO country code, elevation above sea level in feet, coordinates in decimal degrees and time zone.
 
 ```json
 "KOSH": {
@@ -14,8 +14,12 @@ A JSON collection of 28k+ entries with basic information about nearly every airp
     "elevation": 808,
     "lat": 43.9844017029,
     "lon": -88.5569992065,
-    "tz": "America\/Chicago"
+    "tz": "America/Chicago"
 },
 ```
 
 Time zones initially sourced from [TimeZoneDB](https://timezonedb.com) and updated using [TimeAPI](https://www.timeapi.io/).
+
+## Star History
+
+[![Star History Chart](https://api.star-history.com/svg?repos=mwgg/Airports&type=Date)](https://star-history.com/#mwgg/Airports&Date)