Monthly Millions Of Wagon-Miles
1920-01-01 310.000
1920-02-01 291.000
1920-03-01 330.000
1920-04-01 289.000
1920-05-01 302.000
1920-06-01 311.000
1920-07-01 314.000
1920-08-01 293.000
1920-09-01 310.000
1920-10-01 253.000
1920-11-01 271.000
1920-12-01 270.000
1921-01-01 258.000
1921-02-01 238.000
1921-03-01 244.000
1921-04-01 161.000
1921-05-01 134.000
1921-06-01 143.000
1921-07-01 213.000
1921-08-01 247.000
1921-09-01 247.000
1921-10-01 248.000
1921-11-01 251.000
1921-12-01 239.000
1922-01-01 229.000
1922-02-01 238.000
1922-03-01 271.000
1922-04-01 225.000
1922-05-01 255.000
1922-06-01 223.000
1922-07-01 252.000
1922-08-01 267.000
1922-09-01 271.000
1922-10-01 281.000
1922-11-01 281.000
1922-12-01 253.000
1923-01-01 278.000
1923-02-01 261.000
1923-03-01 296.000
1923-04-01 268.000
1923-05-01 284.000
1923-06-01 285.000
1923-07-01 269.000
1923-08-01 274.000
1923-09-01 281.000
1923-10-01 301.000
1923-11-01 291.000
1923-12-01 264.000
1924-01-01 242.000
1924-02-01 295.000
1924-03-01 309.000
1924-04-01 281.000
1924-05-01 302.000
1924-06-01 255.000
1924-07-01 291.000
1924-08-01 272.000
1924-09-01 294.000
1924-10-01 307.000
1924-11-01 281.000
1924-12-01 273.000
1925-01-01 286.000
1925-02-01 270.000
1925-03-01 294.000
1925-04-01 267.000
1925-05-01 279.000
1925-06-01 257.000
1925-07-01 299.000
1925-08-01 255.000
1925-09-01 278.000
1925-10-01 297.000
1925-11-01 275.000
1925-12-01 275.000
1926-01-01 277.000
1926-02-01 274.000
1926-03-01 311.000
1926-04-01 278.000
1926-05-01 108.000
1926-06-01 190.000
1926-07-01 190.000
1926-08-01 188.000
1926-09-01 209.000
1926-10-01 238.000
1926-11-01 249.000
1926-12-01 265.000
1927-01-01 280.000
1927-02-01 271.000
1927-03-01 307.000
1927-04-01 267.000
1927-05-01 287.000
1927-06-01 271.000
1927-07-01 280.000
1927-08-01 278.000
1927-09-01 288.000
1927-10-01 290.000
1927-11-01 283.000
1927-12-01 265.000
1928-01-01 263.000
1928-02-01 262.000
1928-03-01 289.000
1928-04-01 244.000
1928-05-01 266.000
1928-06-01 261.000
1928-07-01 259.000
1928-08-01 266.000
1928-09-01 271.000
1928-10-01 290.000
1928-11-01 277.000
1928-12-01 253.000
1929-01-01 275.000
1929-02-01 254.000
1929-03-01 284.000
1929-04-01 277.000
1929-05-01 278.000
1929-06-01 267.000
1929-07-01 287.000
1929-08-01 281.000
1929-09-01 281.000
1929-10-01 304.000
1929-11-01 292.000
1929-12-01 262.000
1930-01-01 282.000
1930-02-01 263.000
1930-03-01 283.000
1930-04-01 257.000
1930-05-01 279.000
1930-06-01 237.000
1930-07-01 268.000
1930-08-01 252.000
1930-09-01 266.000
1930-10-01 283.000
1930-11-01 260.000
1930-12-01 254.000
1931-01-01 256.000
1931-02-01 235.000
1931-03-01 257.000
1931-04-01 242.000
1931-05-01 238.000
1931-06-01 246.000
1931-07-01 252.000
1931-08-01 233.000
1931-09-01 252.000
1931-10-01 268.000
1931-11-01 245.000
1931-12-01 245.000