{"id":"3c921d5c-2bdc-11ea-a78d-0f138b38b5f6","name":"a01155b","subRegion":{"subRegionType":1,"code":"US","name":"United States","regionCode":"US","regionName":"United States","latitude":38.0,"longitude":-97.0},"data":[{"x":"1911","y":"58071.0"},{"x":"1912","y":"59010.0"},{"x":"1913","y":"61172.0"},{"x":"1914","y":"62533.0"},{"x":"1915","y":"61882.0"},{"x":"1916","y":"61013.0"},{"x":"1917","y":"61548.0"},{"x":"1918","y":"63546.0"},{"x":"1919","y":"64633.0"},{"x":"1920","y":"64382.0"},{"x":"1921","y":"64585.0"},{"x":"1922","y":"64140.0"},{"x":"1923","y":"64948.0"},{"x":"1924","y":"65006.0"},{"x":"1925","y":"63612.0"},{"x":"1926","y":"62342.0"},{"x":"1927","y":"60895.0"},{"x":"1928","y":"58845.0"},{"x":"1929","y":"56936.0"},{"x":"1930","y":"55875.0"},{"x":"1931","y":"54385.0"},{"x":"1932","y":"52492.0"},{"x":"1933","y":"50064.0"},{"x":"1934","y":"47436.0"},{"x":"1935","y":"45614.0"},{"x":"1936","y":"44162.0"},{"x":"1937","y":"43624.0"},{"x":"1938","y":"42637.0"},{"x":"1939","y":"41117.0"},{"x":"1940","y":"40041.0"},{"x":"1941","y":"39624.0"},{"x":"1942","y":"39491.0"},{"x":"1943","y":"39725.0"},{"x":"1944","y":"39681.0"},{"x":"1945","y":"38853.0"}],"xUnits":{"value":10,"name":"Annual"},"yUnits":{"value":10,"name":"Number Of Locomotives","scaleFactor":1.0},"lastAccessed":"2019-12-31T15:06:43.707508","downloadUrl":"http://www.nber.org/databases/macrohistory/data/01/a01155b.db"}