Month	Dollars Per Ton
1914-01-01	13.5200
1914-02-01	13.9400
1914-03-01	13.8600
1914-04-01	13.7800
1914-05-01	13.7600
1914-06-01	13.7300
1914-07-01	13.7200
1914-08-01	13.7200
1914-09-01	13.7200
1914-10-01	13.5600
1914-11-01	13.3000
1914-12-01	13.3200
1915-01-01	13.2900
1915-02-01	13.2800
1915-03-01	13.2700
1915-04-01	13.2600
1915-05-01	13.2900
1915-06-01	13.3600
1915-07-01	13.5300
1915-08-01	14.6900
1915-09-01	15.4600
1915-10-01	15.6900
1915-11-01	16.4200
1915-12-01	18.3100
1916-01-01	19.1800
1916-02-01	19.0800
1916-03-01	19.4400
1916-04-01	19.4700
1916-05-01	19.3800
1916-06-01	19.3200
1916-07-01	19.3000
1916-08-01	19.2800
1916-09-01	19.6000
1916-10-01	21.1800
1916-11-01	26.6400
1916-12-01	31.6200
1917-01-01	31.7800
1917-02-01	32.0600
1917-03-01	34.4500
1917-04-01	39.9000
1917-05-01	42.9300
1917-06-01	51.1000
1917-07-01	54.1400
1917-08-01	52.4600
1917-09-01	45.4800
1917-10-01	34.7100
1917-11-01	34.7100
1917-12-01	34.7100
1918-01-01	34.7100
1918-02-01	34.7100
1918-03-01	34.7100
1918-04-01	33.8400
1918-05-01	33.8400
1918-06-01	33.9400
1918-07-01	34.0800
1918-08-01	34.0800
1918-09-01	34.0800
1918-10-01	34.7600
1918-11-01	34.7600
1918-12-01	34.7600
1919-01-01	31.7600
1919-02-01	31.7600
1919-03-01	30.5700
1919-04-01	27.5100
1919-05-01	27.4700
1919-06-01	27.3400
1919-07-01	27.3400
1919-08-01	27.5100
1919-09-01	27.5800
1919-10-01	27.6500
1919-11-01	30.1600
1919-12-01	36.0400
1920-01-01	39.2600
1920-02-01	42.6300
1920-03-01	42.4500
1920-04-01	43.1700
1920-05-01	43.9000
1920-06-01	44.5900
1920-07-01	46.2500
1920-08-01	48.3900
1920-09-01	49.2000
1920-10-01	46.1500
1920-11-01	38.9900
1920-12-01	35.4800
1921-01-01	32.1800
1921-02-01	29.4200
1921-03-01	26.2500
1921-04-01	24.9600
1921-05-01	24.0300
1921-06-01	22.7700
1921-07-01	21.1800
1921-08-01	20.1700
1921-09-01	20.7300
1921-10-01	20.7700
1921-11-01	20.6000
1921-12-01	20.2500
1922-01-01	19.7300
1922-02-01	19.4100
1922-03-01	19.4700
1922-04-01	21.1000
1922-05-01	25.0600
1922-06-01	25.5400
1922-07-01	25.0300
1922-08-01	27.9900
1922-09-01	33.6000
1922-10-01	32.5100
1922-11-01	29.7700
1922-12-01	26.8600