{"id":"5a457af6-2bdc-11ea-aa21-9bd2bf9f1a02","name":"a02134","subRegion":{"subRegionType":1,"code":"US","name":"United States","regionCode":"US","regionName":"United States","latitude":38.0,"longitude":-97.0},"data":[{"x":"1913","y":"1562.00"},{"x":"1914","y":"1609.00"},{"x":"1915","y":"1611.00"},{"x":"1916","y":"1627.00"},{"x":"1917","y":"1627.00"},{"x":"1918","y":"1383.00"},{"x":"1919","y":"1434.00"},{"x":"1920","y":"1450.00"},{"x":"1921","y":"1521.00"},{"x":"1922","y":"1534.00"},{"x":"1923","y":"1557.00"},{"x":"1924","y":"1594.00"},{"x":"1925","y":"1635.00"},{"x":"1926","y":"1668.00"},{"x":"1927","y":"1783.00"},{"x":"1928","y":"1890.00"},{"x":"1929","y":"1934.00"},{"x":"1930","y":"1949.00"},{"x":"1931","y":"1913.00"},{"x":"1932","y":"1899.00"},{"x":"1933","y":"1902.00"},{"x":"1934","y":"1903.00"},{"x":"1935","y":"1906.00"},{"x":"1936","y":"1909.00"},{"x":"1937","y":"1913.00"},{"x":"1938","y":"1914.00"},{"x":"1939","y":"1913.00"},{"x":"1940","y":"1915.00"},{"x":"1941","y":"1929.00"},{"x":"1942","y":"1941.00"}],"xUnits":{"value":10,"name":"Annual"},"yUnits":{"value":10,"name":"Thousand Miles","scaleFactor":1.0},"lastAccessed":"2020-02-08T19:53:45.667688","downloadUrl":"http://www.nber.org/databases/macrohistory/data/02/a02134.db"}