{
  "fields": [{"id":"_id","type":"int"},{"id":"Tramo de edad","type":"text"},{"id":"año","type":"numeric"},{"id":"valor","type":"numeric"}],
  "records": [
    [1,"14 a 19",2011,47.2],
    [2,"20 a 24",2011,37.9],
    [3,"25 a 29",2011,34.1]
]}