{
  "fields": [{"id":"_id","type":"int"},{"id":"年度","type":"text"},{"id":"加入世帯数[世帯]","type":"text"},{"id":"加入者数[人]","type":"text"},{"id":"一世帯当り加入者数[人]","type":"text"}],
  "records": [
    [1,"2014","44707","63498","1.4"],
    [2,"2015","44086","61954","1.4"],
    [3,"2016","42792","59508","1.4"],
    [4,"2017","41865","57642","1.4"],
    [5,"2018","40684","55511","1.4"],
    [6,"令和元年度港区行政資料集　国民健康保険加入状況","Ver201903",null,null]
]}