Month	Dollars Per Short Ton
1913-01-01	3.99000
1913-02-01	3.99000
1913-03-01	3.96000
1913-04-01	3.92000
1913-05-01	3.96000
1913-06-01	3.96000
1913-07-01	3.58000
1913-08-01	3.45000
1913-09-01	4.12000
1913-10-01	3.89000
1913-11-01	3.60000
1913-12-01	3.38000
1914-01-01	3.34000
1914-02-01	3.17000
1914-03-01	3.12000
1914-04-01	3.38000
1914-05-01	3.39000
1914-06-01	3.45000
1914-07-01	3.45000
1914-08-01	3.52000
1914-09-01	3.50000
1914-10-01	3.46000
1914-11-01	3.44000
1914-12-01	3.48000
1915-01-01	3.49000
1915-02-01	3.47000
1915-03-01	3.46000
1915-04-01	3.49000
1915-05-01	3.44000
1915-06-01	3.28000
1915-07-01	3.22000
1915-08-01	3.45000
1915-09-01	3.52000
1915-10-01	3.52000
1915-11-01	3.52000
1915-12-01	3.54000
1916-01-01	3.43000
1916-02-01	3.34000
1916-03-01	3.65000
1916-04-01	3.84000
1916-05-01	3.88000
1916-06-01	3.89000
1916-07-01	3.92000
1916-08-01	3.92000
1916-09-01	3.97000
1916-10-01	3.92000
1916-11-01	4.28000
1916-12-01	5.32000
1917-01-01	4.54000
1917-02-01	4.72000
1917-03-01	5.02000
1917-04-01	5.87000
1917-05-01	7.03000
1917-06-01	6.72000
1917-07-01	7.07000
1917-08-01	7.52000
1917-09-01	7.52000
1917-10-01	7.09000
1917-11-01	5.51000
1917-12-01	5.51000
1918-01-01	6.74000
1918-02-01	7.70000
1918-03-01	7.76000
1918-04-01	7.82000
1918-05-01	7.82000
1918-06-01	7.82000
1918-07-01	7.85000
1918-08-01	7.89000
1918-09-01	8.27000
1918-10-01	8.30000
1918-11-01	8.30000
1918-12-01	8.30000
1919-01-01	7.50000
1919-02-01	7.50000
1919-03-01	6.87000
1919-04-01	6.24000
1919-05-01	5.49000
1919-06-01	5.49000
1919-07-01	6.11000
1919-08-01	6.11000
1919-09-01	6.11000
1919-10-01	6.26000
1919-11-01	7.49000
1919-12-01	7.80000
1920-01-01	6.02000
1920-02-01	6.02000
1920-03-01	6.02000
1920-04-01	9.26000
1920-05-01	10.6700
1920-06-01	11.0200
1920-07-01	14.7900
1920-08-01	16.3200
1920-09-01	15.1100
1920-10-01	14.6100
1920-11-01	10.8400
1920-12-01	8.55000
1921-01-01	7.72000
1921-02-01	7.72000
1921-03-01	7.72000
1921-04-01	7.72000
1921-05-01	7.72000
1921-06-01	7.72000
1921-07-01	7.72000
1921-08-01	7.72000
1921-09-01	7.72000
1921-10-01	7.72000
1921-11-01	7.72000
1921-12-01	7.72000
1922-01-01	7.55000
1922-02-01	7.50000
1922-03-01	7.50000
1922-04-01	7.72000