         console.log( "Loading complete" );
          },
          "load": function ( options, chart ) {
            console.log( "File loaded: ", options.url );
          },
          "error": function ( options, chart ) {
            console.log( "Error occured loading file: ", options.url );
          }
        },
        "categoryField": "year",
        "startDuration": 1,
        "rotate": true,
        "categoryAxis": {
          "gridPosition": "start"
        },
        "valueAxes": [{
          "po