Monthly Millions Of Car-Miles
1920-01-01 511.000
1920-02-01 456.000
1920-03-01 517.000
1920-04-01 463.000
1920-05-01 545.000
1920-06-01 581.000
1920-07-01 653.000
1920-08-01 671.000
1920-09-01 677.000
1920-10-01 736.000
1920-11-01 717.000
1920-12-01 735.000
1921-01-01 728.000
1921-02-01 559.000
1921-03-01 572.000
1921-04-01 538.000
1921-05-01 582.000
1921-06-01 590.000
1921-07-01 599.000
1921-08-01 615.000
1921-09-01 608.000
1921-10-01 687.000
1921-11-01 684.000
1921-12-01 578.000
1922-01-01 554.000
1922-02-01 565.000
1922-03-01 642.000
1922-04-01 530.000
1922-05-01 574.000
1922-06-01 591.000
1922-07-01 478.000
1922-08-01 475.000
1922-09-01 514.000
1922-10-01 611.000
1922-11-01 652.000
1922-12-01 651.000
1923-01-01 666.000
1923-02-01 549.000
1923-03-01 656.000
1923-04-01 692.000
1923-05-01 753.000
1923-06-01 721.000
1923-07-01 762.000
1923-08-01 747.000
1923-09-01 724.000
1923-10-01 791.000
1923-11-01 766.000
1923-12-01 740.000
1924-01-01 671.000
1924-02-01 661.000
1924-03-01 713.000
1924-04-01 645.000
1924-05-01 698.000
1924-06-01 670.000
1924-07-01 722.000
1924-08-01 717.000
1924-09-01 733.000
1924-10-01 819.000
1924-11-01 761.000
1924-12-01 725.000
1925-01-01 737.000
1925-02-01 659.000
1925-03-01 707.000
1925-04-01 713.000
1925-05-01 764.000
1925-06-01 754.000
1925-07-01 787.000
1925-08-01 838.000
1925-09-01 812.000
1925-10-01 877.000
1925-11-01 857.000
1925-12-01 817.000
1926-01-01 790.000
1926-02-01 718.000
1926-03-01 816.000
1926-04-01 801.000
1926-05-01 836.000
1926-06-01 829.000
1926-07-01 870.000
1926-08-01 896.000
1926-09-01 861.000
1926-10-01 929.000
1926-11-01 907.000
1926-12-01 904.000
1927-01-01 850.000
1927-02-01 804.000
1927-03-01 879.000
1927-04-01 809.000
1927-05-01 858.000
1927-06-01 833.000
1927-07-01 843.000
1927-08-01 894.000
1927-09-01 883.000
1927-10-01 980.000
1927-11-01 878.000
1927-12-01 802.000
1928-01-01 797.000
1928-02-01 799.000
1928-03-01 866.000
1928-04-01 824.000
1928-05-01 897.000
1928-06-01 839.000
1928-07-01 869.000
1928-08-01 920.000
1928-09-01 888.000
1928-10-01 994.000
1928-11-01 933.000
1928-12-01 889.000
1929-01-01 823.000
1929-02-01 829.000
1929-03-01 903.000
1929-04-01 857.000
1929-05-01 935.000
1929-06-01 874.000
1929-07-01 920.000
1929-08-01 940.000
1929-09-01 915.000
1929-10-01 1007.00
1929-11-01 972.000
1929-12-01 867.000
1930-01-01 817.000
1930-02-01 793.000
1930-03-01 819.000
1930-04-01 826.000
1930-05-01 851.000
1930-06-01 800.000
1930-07-01 844.000
1930-08-01 851.000
1930-09-01 870.000
1930-10-01 932.000
1930-11-01 829.000
1930-12-01 732.000
1931-01-01 719.000
1931-02-01 664.000
1931-03-01 744.000
1931-04-01 735.000
1931-05-01 759.000
1931-06-01 721.000
1931-07-01 763.000
1931-08-01 729.000
1931-09-01 698.000
1931-10-01 759.000
1931-11-01 656.000
1931-12-01 592.000
1932-01-01 572.000
1932-02-01 552.000
1932-03-01 601.000
1932-04-01 563.000
1932-05-01 541.000
1932-06-01 514.000
1932-07-01 512.000
1932-08-01 520.000
1932-09-01 576.000
1932-10-01 682.000
1932-11-01 566.000
1932-12-01 537.000
1933-01-01 514.000
1933-02-01 479.000
1933-03-01 496.000
1933-04-01 514.000
1933-05-01 564.000
1933-06-01 583.000
1933-07-01 643.000
1933-08-01 638.000
1933-09-01 631.000
1933-10-01 671.000
1933-11-01 603.000
1933-12-01 544.000
1934-01-01 597.000
1934-02-01 545.000
1934-03-01 683.000
1934-04-01 608.000
1934-05-01 636.000
1934-06-01 625.000
1934-07-01 641.000
1934-08-01 645.000
1934-09-01 643.000
1934-10-01 669.000
1934-11-01 602.000
1934-12-01 565.000
1935-01-01 582.000
1935-02-01 589.000
1935-03-01 644.000
1935-04-01 602.000
1935-05-01 582.000
1935-06-01 578.000
1935-07-01 562.000
1935-08-01 583.000
1935-09-01 599.000
1935-10-01 688.000
1935-11-01 644.000
1935-12-01 632.000
1936-01-01 610.000
1936-02-01 600.000
1936-03-01 658.000
1936-04-01 637.000
1936-05-01 686.000
1936-06-01 656.000
1936-07-01 694.000
1936-08-01 685.000
1936-09-01 675.000
1936-10-01 756.000
1936-11-01 730.000
1936-12-01 773.000
1937-01-01 671.000
1937-02-01 647.000
1937-03-01 741.000
1937-04-01 693.000
1937-05-01 731.000
1937-06-01 703.000
1937-07-01 737.000
1937-08-01 723.000
1937-09-01 708.000
1937-10-01 807.000
1937-11-01 728.000
1937-12-01 692.000
1938-01-01 627.000
1938-02-01 573.000
1938-03-01 605.000
1938-04-01 588.000
1938-05-01 589.000
1938-06-01 583.000
1938-07-01 604.000
1938-08-01 653.000
1938-09-01 629.000
1938-10-01 734.000
1938-11-01 681.000
1938-12-01 692.000
1939-01-01 662.000
1939-02-01 605.000
1939-03-01 669.000
1939-04-01 600.000
1939-05-01 633.000
1939-06-01 650.000
1939-07-01 672.000
1939-08-01 691.000
1939-09-01 707.000
1939-10-01 813.000
1939-11-01 782.000
1939-12-01 733.000
1940-01-01 732.000
1940-02-01 717.000
1940-03-01 731.000
1940-04-01 709.000
1940-05-01 755.000
1940-06-01 712.000
1940-07-01 753.000
1940-08-01 762.000
1940-09-01 761.000
1940-10-01 835.000
1940-11-01 794.000
1940-12-01 821.000
1941-01-01 784.000
1941-02-01 739.000
1941-03-01 823.000
1941-04-01 719.000
1941-05-01 845.000
1941-06-01 851.000
1941-07-01 896.000
1941-08-01 917.000
1941-09-01 870.000
1941-10-01 956.000
1941-11-01 914.000
1941-12-01 879.000
1942-01-01 869.000
1942-02-01 827.000
1942-03-01 1002.00
1942-04-01 1060.00
1942-05-01 1156.00
1942-06-01 1104.00
1942-07-01 1136.00
1942-08-01 1168.00
1942-09-01 1113.00
1942-10-01 1122.00
1942-11-01 1093.00
1942-12-01 1042.00
1943-01-01 1044.00
1943-02-01 943.000
1943-03-01 1106.00
1943-04-01 1111.00
1943-05-01 1137.00
1943-06-01 1081.00
1943-07-01 1141.00
1943-08-01 1140.00