{
  "fields": [{"id":"_id","type":"int"},{"id":"Tramo edad","type":"text"},{"id":"año","type":"numeric"},{"id":"valor","type":"numeric"}],
  "records": [
    [1,"12 a 14",2013,0.9],
    [2,"15 a 19",2013,11],
    [3,"20 a 24",2013,34.7],
    [4,"25 a 29",2013,53.4],
    [5,"12 a 14",2008,1.2],
    [6,"15 a 19",2008,12.2],
    [7,"20 a 24",2008,34.5],
    [8,"25 a 29",2008,52.1]
]}