{
  "fields": [{"id":"_id","type":"int"},{"id":"Tramos de edad","type":"text"},{"id":"año","type":"numeric"},{"id":"valor","type":"numeric"}],
  "records": [
    [1,"15 a 19",2013,28.5],
    [2,"20 a 24",2013,80.2],
    [3,"25 a 29",2013,96]
]}