Monthly Millions Of Wagon-Miles
1920-01-01 434.000
1920-02-01 410.000
1920-03-01 466.000
1920-04-01 408.000
1920-05-01 429.000
1920-06-01 443.000
1920-07-01 452.000
1920-08-01 419.000
1920-09-01 441.000
1920-10-01 346.000
1920-11-01 386.000
1920-12-01 396.000
1921-01-01 382.000
1921-02-01 349.000
1921-03-01 356.000
1921-04-01 206.000
1921-05-01 168.000
1921-06-01 184.000
1921-07-01 311.000
1921-08-01 373.000
1921-09-01 360.000
1921-10-01 364.000
1921-11-01 371.000
1921-12-01 359.000
1922-01-01 347.000
1922-02-01 356.000
1922-03-01 408.000
1922-04-01 338.000
1922-05-01 381.000
1922-06-01 327.000
1922-07-01 374.000
1922-08-01 400.000
1922-09-01 404.000
1922-10-01 418.000
1922-11-01 419.000
1922-12-01 383.000
1923-01-01 419.000
1923-02-01 391.000
1923-03-01 439.000
1923-04-01 402.000
1923-05-01 425.000
1923-06-01 425.000
1923-07-01 403.000
1923-08-01 409.000
1923-09-01 419.000
1923-10-01 459.000
1923-11-01 434.000
1923-12-01 399.000
1924-01-01 359.000
1924-02-01 439.000
1924-03-01 466.000
1924-04-01 425.000
1924-05-01 451.000
1924-06-01 376.000
1924-07-01 431.000
1924-08-01 405.000
1924-09-01 435.000
1924-10-01 452.000
1924-11-01 415.000
1924-12-01 408.000
1925-01-01 427.000
1925-02-01 404.000
1925-03-01 439.000
1925-04-01 398.000
1925-05-01 413.000
1925-06-01 378.000
1925-07-01 443.000
1925-08-01 383.000
1925-09-01 409.000
1925-10-01 438.000
1925-11-01 403.000
1925-12-01 411.000
1926-01-01 416.000
1926-02-01 410.000
1926-03-01 462.000
1926-04-01 412.000
1926-05-01 139.000
1926-06-01 248.000
1926-07-01 255.000
1926-08-01 258.000
1926-09-01 284.000
1926-10-01 330.000
1926-11-01 355.000
1926-12-01 391.000
1927-01-01 421.000
1927-02-01 405.000
1927-03-01 456.000
1927-04-01 396.000
1927-05-01 424.000
1927-06-01 399.000
1927-07-01 414.000
1927-08-01 414.000
1927-09-01 423.000
1927-10-01 425.000
1927-11-01 416.000
1927-12-01 394.000
1928-01-01 396.000
1928-02-01 392.000
1928-03-01 427.000
1928-04-01 364.000
1928-05-01 394.000
1928-06-01 383.000
1928-07-01 384.000
1928-08-01 394.000
1928-09-01 401.000
1928-10-01 431.000
1928-11-01 408.000
1928-12-01 377.000
1929-01-01 413.000
1929-02-01 384.000
1929-03-01 424.000
1929-04-01 417.000
1929-05-01 414.000
1929-06-01 394.000
1929-07-01 425.000
1929-08-01 418.000
1929-09-01 415.000
1929-10-01 447.000
1929-11-01 427.000
1929-12-01 392.000
1930-01-01 424.000
1930-02-01 394.000
1930-03-01 425.000
1930-04-01 384.000
1930-05-01 416.000
1930-06-01 350.000
1930-07-01 398.000
1930-08-01 378.000
1930-09-01 399.000
1930-10-01 421.000
1930-11-01 385.000
1930-12-01 385.000
1931-01-01 389.000
1931-02-01 359.000
1931-03-01 385.000
1931-04-01 364.000
1931-05-01 360.000
1931-06-01 368.000
1931-07-01 379.000
1931-08-01 351.000
1931-09-01 381.000
1931-10-01 401.000
1931-11-01 364.000
1931-12-01 367.000