{
  "fields": [{"type":"int","id":"_id"},{"type":"numeric","id":"Anno"},{"type":"numeric","id":"Filobus utilizzati"}],
  "records": [
    [1,2013,139],
    [2,2014,139],
    [3,2015,135],
    [4,2016,135],
    [5,2017,135],
    [6,2018,128]
]}