Month	Millions Of Train-Miles
1920-01-01	46.2000
1920-02-01	42.5000
1920-03-01	45.9000
1920-04-01	44.0000
1920-05-01	46.1000
1920-06-01	46.1000
1920-07-01	48.6000
1920-08-01	48.6000
1920-09-01	46.8000
1920-10-01	47.0000
1920-11-01	45.8000
1920-12-01	48.3000
1921-01-01	47.3000
1921-02-01	42.3000
1921-03-01	46.5000
1921-04-01	44.7000
1921-05-01	45.7000
1921-06-01	44.9000
1921-07-01	47.0000
1921-08-01	47.0000
1921-09-01	44.9000
1921-10-01	45.2000
1921-11-01	44.0000
1921-12-01	45.9000
1922-01-01	45.5000
1922-02-01	40.8000
1922-03-01	45.2000
1922-04-01	43.6000
1922-05-01	45.3000
1922-06-01	45.2000
1922-07-01	46.0000
1922-08-01	44.6000
1922-09-01	42.7000
1922-10-01	43.7000
1922-11-01	43.2000
1922-12-01	45.6000
1923-01-01	46.0000
1923-02-01	41.2000
1923-03-01	45.8000
1923-04-01	44.2000
1923-05-01	46.3000
1923-06-01	46.0000
1923-07-01	48.0000
1923-08-01	48.2000
1923-09-01	45.8000
1923-10-01	46.5000
1923-11-01	44.8000
1923-12-01	46.8000
1924-01-01	47.1000
1924-02-01	43.7000
1924-03-01	46.4000
1924-04-01	45.3000
1924-05-01	46.7000
1924-06-01	45.6000
1924-07-01	47.8000
1924-08-01	47.7000
1924-09-01	45.6000
1924-10-01	45.8000
1924-11-01	44.1000
1924-12-01	47.2000
1925-01-01	47.2000
1925-02-01	42.4000
1925-03-01	46.5000
1925-04-01	45.3000
1925-05-01	46.4000
1925-06-01	45.6000
1925-07-01	47.8000
1925-08-01	47.7000
1925-09-01	45.6000
1925-10-01	46.2000
1925-11-01	44.7000
1925-12-01	47.2000
1926-01-01	46.9000
1926-02-01	42.2000
1926-03-01	46.5000
1926-04-01	45.2000
1926-05-01	46.3000
1926-06-01	45.7000
1926-07-01	47.8000
1926-08-01	47.3000
1926-09-01	45.5000
1926-10-01	45.6000
1926-11-01	44.4000
1926-12-01	47.3000
1927-01-01	46.7000
1927-02-01	41.7000
1927-03-01	46.1000
1927-04-01	44.3000
1927-05-01	45.2000
1927-06-01	44.6000
1927-07-01	46.9000
1927-08-01	46.9000
1927-09-01	44.6000
1927-10-01	44.2000
1927-11-01	42.7000
1927-12-01	45.4000
1928-01-01	45.1000
1928-02-01	41.7000
1928-03-01	44.4000
1928-04-01	42.5000
1928-05-01	44.2000
1928-06-01	43.5000
1928-07-01	45.1000
1928-08-01	44.9000
1928-09-01	42.6000
1928-10-01	42.9000
1928-11-01	41.2000
1928-12-01	43.6000
1929-01-01	43.9000
1929-02-01	39.4000
1929-03-01	43.2000
1929-04-01	41.7000
1929-05-01	43.1000
1929-06-01	42.6000
1929-07-01	44.8000
1929-08-01	44.9000
1929-09-01	42.3000
1929-10-01	42.8000
1929-11-01	41.2000
1929-12-01	44.0000