db.json

{
  "db": [
    {
      "id": 1,
      "date": "2018-02-15",
      "number_invoices": 11,
      "total_amount": 114.89
    }, {
      "id": 2,
      "date": "2018-02-16",
      "number_invoices": 13,
      "total_amount": 126.87
    }, {
      "id": 3,
      "date": "2018-02-17",
      "number_invoices": 16,
      "total_amount": 180.84
    }, {
      "id": 4,
      "date": "2018-02-18",
      "number_invoices": 15,
      "total_amount": 159.85
    }, {
      "id": 5,
      "date": "2018-02-19",
      "number_invoices": 18,
      "total_amount": 223.82
    }, {
      "id": 6,
      "date": "2018-02-20",
      "number_invoices": 21,
      "total_amount": 242.79
    }, {
      "id": 7,
      "date": "2018-02-21",
      "number_invoices": 19,
      "total_amount": 223.81
    }
  ]
}