{
  "fields": [{"id":"_id","type":"int"},{"id":"年度[西暦]","type":"text"},{"id":"被保険者数[人]","type":"text"}],
  "records": [
    [1,"2020","22230"],
    [2,"2021","22864"],
    [3,"2022","23781"],
    [4,"2023","24652"],
    [5,"2024","25392"],
    [6,"令和7年度港区行政資料集　後期高齢者医療制度被保険者数（各年度末現在）","Ver202503"]
]}