{"id":"658b869e-2bdc-11ea-aaf5-cb6030ab1a4c","name":"a03012ba","subRegion":{"subRegionType":1,"code":"US","name":"United States","regionCode":"US","regionName":"United States","latitude":38.0,"longitude":-97.0},"data":[{"x":"1917","y":"11.3050"},{"x":"1918","y":"11.1750"},{"x":"1919","y":"11.7150"},{"x":"1920","y":"12.2770"},{"x":"1921","y":"11.5360"},{"x":"1922","y":"12.2400"},{"x":"1923","y":"12.5560"},{"x":"1924","y":"12.4570"},{"x":"1925","y":"12.5150"},{"x":"1926","y":"12.7990"},{"x":"1927","y":"12.7040"}],"xUnits":{"value":10,"name":"Annual"},"yUnits":{"value":10,"name":"Millions Of Revenue Passengers","scaleFactor":1000000.0},"lastAccessed":"2019-12-31T15:07:44.522827","downloadUrl":"http://www.nber.org/databases/macrohistory/data/03/a03012ba.db"}