Month	Net Ton-Miles Per Loaded Wagon Mile
1920-01-01	5.40000
1920-02-01	5.42000
1920-03-01	5.49000
1920-04-01	5.45000
1920-05-01	5.45000
1920-06-01	5.43000
1920-07-01	5.45000
1920-08-01	5.38000
1920-09-01	5.43000
1920-10-01	4.85000
1920-11-01	5.39000
1920-12-01	5.74000
1921-01-01	5.57000
1921-02-01	5.37000
1921-03-01	5.28000
1921-04-01	3.70000
1921-05-01	3.72000
1921-06-01	3.64000
1921-07-01	5.12000
1921-08-01	5.30000
1921-09-01	5.25000
1921-10-01	5.34000
1921-11-01	5.46000
1921-12-01	5.47000
1922-01-01	5.75000
1922-02-01	5.72000
1922-03-01	5.62000
1922-04-01	5.50000
1922-05-01	5.40000
1922-06-01	5.20000
1922-07-01	5.43000
1922-08-01	5.44000
1922-09-01	5.39000
1922-10-01	5.50000
1922-11-01	5.58000
1922-12-01	5.64000
1923-01-01	5.80000
1923-02-01	5.77000
1923-03-01	5.73000
1923-04-01	5.71000
1923-05-01	5.62000
1923-06-01	5.64000
1923-07-01	5.48000
1923-08-01	5.45000
1923-09-01	5.54000
1923-10-01	5.64000
1923-11-01	5.71000
1923-12-01	5.72000
1924-01-01	5.93000
1924-02-01	5.80000
1924-03-01	5.78000
1924-04-01	5.70000
1924-05-01	5.56000
1924-06-01	5.43000
1924-07-01	5.43000
1924-08-01	5.45000
1924-09-01	5.53000
1924-10-01	5.51000
1924-11-01	5.56000
1924-12-01	5.62000
1925-01-01	5.67000
1925-02-01	5.67000
1925-03-01	5.60000
1925-04-01	5.52000
1925-05-01	5.42000
1925-06-01	5.32000
1925-07-01	5.56000
1925-08-01	5.25000
1925-09-01	5.36000
1925-10-01	5.41000
1925-11-01	5.54000
1925-12-01	5.70000
1926-01-01	5.77000
1926-02-01	5.71000
1926-03-01	5.62000
1926-04-01	5.60000
1926-05-01	4.17000
1926-06-01	3.86000
1926-07-01	3.95000
1926-08-01	4.17000
1926-09-01	4.35000
1926-10-01	4.81000
1926-11-01	5.25000
1926-12-01	5.65000
1927-01-01	5.91000
1927-02-01	5.80000
1927-03-01	5.69000
1927-04-01	5.60000
1927-05-01	5.57000
1927-06-01	5.55000
1927-07-01	5.53000
1927-08-01	5.49000
1927-09-01	5.50000
1927-10-01	5.46000
1927-11-01	5.50000
1927-12-01	5.67000
1928-01-01	5.72000
1928-02-01	5.67000
1928-03-01	5.65000
1928-04-01	5.58000
1928-05-01	5.48000
1928-06-01	5.44000
1928-07-01	5.40000
1928-08-01	5.46000
1928-09-01	5.48000
1928-10-01	5.47000
1928-11-01	5.51000
1928-12-01	5.69000
1929-01-01	5.79000
1929-02-01	5.81000
1929-03-01	5.80000
1929-04-01	5.55000
1929-05-01	5.58000
1929-06-01	5.52000
1929-07-01	5.51000
1929-08-01	5.59000
1929-09-01	5.57000
1929-10-01	5.58000
1929-11-01	5.69000
1929-12-01	5.79000
1930-01-01	5.81000
1930-02-01	5.82000
1930-03-01	5.68000
1930-04-01	5.59000
1930-05-01	5.51000
1930-06-01	5.38000
1930-07-01	5.41000
1930-08-01	5.48000
1930-09-01	5.46000
1930-10-01	5.51000
1930-11-01	5.64000
1930-12-01	5.79000
1931-01-01	5.70000
1931-02-01	5.67000
1931-03-01	5.56000
1931-04-01	5.52000
1931-05-01	5.41000
1931-06-01	5.44000
1931-07-01	5.38000
1931-08-01	5.44000
1931-09-01	5.42000
1931-10-01	5.39000
1931-11-01	5.47000
1931-12-01	5.63000