{
  "fields": [{"id":"_id","type":"int"},{"id":"Clave","type":"numeric"},{"id":"Tramo edad","type":"text"},{"id":"año","type":"numeric"},{"id":"valor","type":"numeric"}],
  "records": [
    [1,1,"14 a 17",2011,98.2],
    [2,2,"18 a 24",2011,75.3],
    [3,3,"25 a 29",2011,51.9]
]}