{
  "fields": [{"id":"_id","type":"int"},{"id":"年次","type":"text"},{"id":"西暦","type":"numeric"},{"id":"実延長（m）","type":"numeric"},{"id":"面 積（平方メートル）","type":"numeric"},{"id":"改良道・延長（m）","type":"numeric"},{"id":"改良道・改良率（％）","type":"numeric"},{"id":"改良道・延長（ｍ）","type":"numeric"},{"id":"改良道・舗装率（％）","type":"numeric"},{"id":"自動車交通不能道・延長（m）","type":"numeric"},{"id":"自動車交通不能道・率（％）","type":"numeric"}],
  "records": [
    [1,"平成17年度",2005,573492,4648732,464941,81.1,555108,96.8,22491,3.9],
    [2,"平成18年度",2006,574566,4663713,466857,81.3,556444,96.8,22120,3.8],
    [3,"平成19年度",2007,576415,4660153,468541,81.3,558273,96.9,22136,3.8],
    [4,"平成20年度",2008,576904,4671142,470539,81.6,558633,96.8,22100,3.8],
    [5,"平成21年度",2009,577633,4688389,472525,81.8,559398,96.8,21869,3.8],
    [6,"平成22年度",2010,577034,4684549,471926,81.8,558799,96.8,21740,3.8],
    [7,"平成23年度",2011,578843,4710198,474588,82,560608,96.8,21837,3.8],
    [8,"平成24年度",2012,580993,4738495,476723,82.1,562748,96.9,21852,3.8],
    [9,"平成25年度",2013,583040,4759460,479062,82.2,564731,96.9,21835,3.7],
    [10,"平成26年度",2014,587262,4816972,483752,82.4,568968,96.9,22630,3.9],
    [11,"平成27年度",2015,586857,4827870,485307,82.7,568564,96.9,21913,3.7],
    [12,"平成28年度",2016,588769,4848569,487694,82.8,570740,96.9,21803,3.7],
    [13,"平成29年度",2017,589573,4858236,489677,83.1,571575,96.9,21055,3.6],
    [14,"平成30年度",2018,590608,4874241,490825,83.1,572610,97,20975,3.6],
    [15,"令和元年度",2019,590595,4875551,491684,83.3,577854,97.8,20553,3.5],
    [16,"令和2年度",2020,591147,4878497,492547,83.3,578584,97.9,20391,3.4],
    [17,"令和3年度",2021,592098,4888281,493513,83.3,579537,97.9,20316,3.4],
    [18,"令和4年度",2022,592083,4889917,493415,83.3,579523,97.9,20466,3.5]
]}