{
  "fields": [{"id":"_id","type":"int"},{"id":"年度[西暦]","type":"text"},{"id":"加入世帯数[世帯]","type":"text"},{"id":"加入者数[人]","type":"numeric"},{"id":"一世帯当り加入者数[人]","type":"numeric"}],
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    [5,"2022","37467",49445,1.3],
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    [7,"令和5年度港区行政資料集　国民健康保険加入状況","Ver202303",null,null]
]}