{
  "fields": [{"id":"_id","type":"int"},{"id":"年","type":"numeric"},{"id":"常住人口","type":"numeric"},{"id":"流入人口","type":"numeric"},{"id":"流出人口","type":"numeric"},{"id":"昼間人口","type":"numeric"}],
  "records": [
    [1,2005,49253,12595,11057,50791],
    [2,2010,51023,11801,10750,52074],
    [3,2015,50254,11983,11446,50791],
    [4,2020,49835,11064,11136,49763]
]}