{
  "fields": [{"id":"_id","type":"int"},{"id":"年度","type":"text"},{"id":"都市計画決定延長(km)","type":"numeric"},{"id":"改良済延長(km)","type":"numeric"}],
  "records": [
    [1,"昭和11年",246.84,null],
    [2,"昭和12年",246.84,null],
    [3,"昭和13年",246.84,null],
    [4,"昭和14年",246.84,null],
    [5,"昭和15年",247.04,null],
    [6,"昭和16年",247.04,null],
    [7,"昭和17年",247.04,null],
    [8,"昭和18年",247.04,null],
    [9,"昭和19年",243.98,null],
    [10,"昭和20年",243.98,null],
    [11,"昭和21年",243.98,null],
    [12,"昭和22年",243.98,null],
    [13,"昭和23年",245.86,null],
    [14,"昭和24年",245.86,null],
    [15,"昭和25年",245.86,null],
    [16,"昭和26年",245.86,null],
    [17,"昭和27年",245.06,null],
    [18,"昭和28年",243.46,null],
    [19,"昭和29年",243.46,null],
    [20,"昭和30年",243.46,null],
    [21,"昭和31年",245.44,null],
    [22,"昭和32年",275.64,null],
    [23,"昭和33年",275.64,null],
    [24,"昭和34年",275.64,null],
    [25,"昭和35年",275.69,null],
    [26,"昭和36年",275.69,null],
    [27,"昭和37年",275.69,null],
    [28,"昭和38年",291.31,null],
    [29,"昭和39年",293.02,null],
    [30,"昭和40年",468.7,null],
    [31,"昭和41年",468.7,null],
    [32,"昭和42年",524.41,null],
    [33,"昭和43年",542.97,157.57],
    [34,"昭和44年",541.89,211.41],
    [35,"昭和45年",544.13,226.54],
    [36,"昭和46年",541.59,277.95],
    [37,"昭和47年",541.64,296.93],
    [38,"昭和48年",575.68,291.39],
    [39,"昭和49年",608.5,296.58],
    [40,"昭和50年",608.73,327.31],
    [41,"昭和51年",611.7,331.59],
    [42,"昭和52年",635.96,348.0],
    [43,"昭和53年",642.58,356.13],
    [44,"昭和54年",647.58,379.53],
    [45,"昭和55年",671.16,392.95],
    [46,"昭和56年",670.76,408.7],
    [47,"昭和57年",671.84,426.21],
    [48,"昭和58年",677.91,456.46],
    [49,"昭和59年",712.38,491.38],
    [50,"昭和60年",728.45,509.33],
    [51,"昭和61年",748.63,526.38],
    [52,"昭和62年",754.0,540.28],
    [53,"昭和63年",767.29,558.17],
    [54,"平成元年",775.9,571.25],
    [55,"平成２年",780.46,586.01],
    [56,"平成３年",783.34,598.45],
    [57,"平成４年",814.15,608.14],
    [58,"平成５年",815.05,629.2],
    [59,"平成６年",817.16,651.58],
    [60,"平成７年",837.37,663.07],
    [61,"平成８年",845.18,674.45],
    [62,"平成９年",845.78,694.29],
    [63,"平成１０年",847.64,706.98],
    [64,"平成１１年",850.68,724.55],
    [65,"平成１２年",850.9,730.72],
    [66,"平成１３年",853.18,739.36],
    [67,"平成１４年",857.87,748.81],
    [68,"平成１５年",858.87,758.51],
    [69,"平成１６年",863.93,770.49],
    [70,"平成１７年",869.76,776.65],
    [71,"平成１８年",870.01,781.85],
    [72,"平成１９年",869.85,785.96],
    [73,"平成２０年",870.88,792.3],
    [74,"平成２１年",871.2,799.27],
    [75,"平成２２年",871.56,802.13],
    [76,"平成２３年",871.56,803.48],
    [77,"平成２４年",872.67,805.31],
    [78,"平成２５年",874.31,806.26],
    [79,"平成２６年",874.31,808.94],
    [80,"平成２７年",874.31,813.42],
    [81,"平成２８年",874.31,813.9],
    [82,"平成２９年",876.23,818.38],
    [83,"平成３０年",876.34,820.26]
]}