{
  "fields": [{"id":"_id","type":"int"},{"id":"年次別・区分","type":"text"},{"id":"総数（人）","type":"numeric"},{"id":"20歳未満（人）","type":"numeric"},{"id":"20〜24歳（人）","type":"numeric"},{"id":"25〜29歳（人）","type":"numeric"},{"id":"30〜34歳（人）","type":"numeric"},{"id":"35〜39歳（人）","type":"numeric"},{"id":"40〜44歳（人）","type":"numeric"},{"id":"45歳以上（人）","type":"numeric"},{"id":"不詳（人）","type":"numeric"}],
  "records": [
    [1,"2017",509,52,121,103,104,79,47,3,0],
    [2,"2018",495,43,108,83,117,88,51,5,0],
    [3,"2019",472,53,112,99,81,79,45,3,0],
    [4,"2020",466,58,114,89,88,75,40,2,0],
    [5,"2021",355,37,79,76,72,59,31,1,0],
    [6,"満７週以前",237,19,52,53,49,37,26,1,0],
    [7,"8 〜11週",112,17,26,21,23,21,4,0,0],
    [8,"12〜15週",3,0,1,1,0,1,0,0,0],
    [9,"16〜19週",2,0,0,1,0,0,1,0,0],
    [10,"20〜21週",1,1,0,0,0,0,0,0,0],
    [11,"不詳",0,0,0,0,0,0,0,0,0]
]}