{
  "fields": [{"id":"_id","type":"int"},{"id":"年度","type":"text"},{"id":"総数","type":"numeric"},{"id":"第１号被保険者数","type":"numeric"},{"id":"第３号被保険者数","type":"numeric"},{"id":"任意加入被保険者数","type":"numeric"}],
  "records": [
    [1,"平成15年",35733,23204,12112,417],
    [2,"平成16年",35274,22807,12011,456],
    [3,"平成17年",34866,22349,12095,422],
    [4,"平成18年",33831,21603,11808,420],
    [5,"平成19年",32613,20600,11550,463],
    [6,"平成20年",31807,20203,11138,466],
    [7,"平成21年",31504,20193,10848,463],
    [8,"平成22年",30910,19865,10612,433],
    [9,"平成23年",30092,19557,10129,406],
    [10,"平成24年",29821,19598,9875,348],
    [11,"平成25年",28906,18985,9639,282],
    [12,"平成26年",28552,18766,9540,246],
    [13,"平成27年",27568,17984,9376,208],
    [14,"平成28年",26616,17326,9099,191],
    [15,"平成29年",25858,16806,8897,155],
    [16,"平成30年",25263,16377,8735,151],
    [17,"平成31(令和元)年",24884,16221,8533,130],
    [18,"令和2年",24667,16235,8299,133],
    [19,"",null,null,null,null],
    [20,"＊単位：人",null,null,null,null],
    [21,"＊各年度末現在",null,null,null,null],
    [22,"＊保険年金課調べ（厚生労働省統計資料による）",null,null,null,null]
]}