Month	Dollars Per Ton
1913-01-01	23.0000
1913-02-01	22.7500
1913-03-01	22.0000
1913-04-01	22.8000
1913-05-01	22.8800
1913-06-01	22.3800
1913-07-01	22.5000
1913-08-01	23.1200
1913-09-01	24.0000
1913-10-01	24.1000
1913-11-01	23.0000
1913-12-01	21.5000
1914-01-01	21.5000
1914-02-01	21.8800
1914-03-01	22.0000
1914-04-01	22.0000
1914-05-01	22.0000
1914-06-01	22.0000
1914-07-01	21.1500
1914-08-01	21.1600
1914-09-01	17.8800
1914-10-01	17.8800
1914-11-01	17.8800
1914-12-01	17.8800
1915-01-01	17.4100
1915-02-01	17.2500
1915-03-01	17.2500
1915-04-01	16.7500
1915-05-01	16.7500
1915-06-01	16.5000
1915-07-01	16.2500
1915-08-01	16.2500
1915-09-01	16.2500
1915-10-01	16.2500
1915-11-01	16.2500
1915-12-01	16.2500
1916-01-01	16.2500
1916-02-01	20.6900
1916-03-01	23.6500
1916-04-01	21.3800
1916-05-01	19.1900
1916-06-01	21.3500
1916-07-01	21.2500
1916-08-01	21.0500
1916-09-01	25.1200
1916-10-01	31.6200
1916-11-01	36.0000
1916-12-01	43.5000
1917-01-01	40.2500
1917-02-01	42.1200
1917-03-01	49.7500
1917-04-01	46.1200
1917-05-01	42.5000
1917-06-01	43.7500
1917-07-01	42.3800
1917-08-01	42.0000
1917-09-01	41.0000
1917-10-01	38.5000
1917-11-01	35.0000
1917-12-01	35.0000
1918-01-01	32.6000
1918-02-01	33.0000
1918-03-01	32.0000
1918-04-01	32.0000
1918-05-01	31.2000
1918-06-01	30.0000
1918-07-01	27.0000
1918-08-01	28.5000
1918-09-01	28.5000
1918-10-01	28.5000
1918-11-01	28.5000
1918-12-01	31.8000
1919-01-01	30.9000
1919-02-01	29.3800
1919-03-01	29.0000
1919-04-01	28.6000
1919-05-01	28.0000
1919-06-01	28.0000
1919-07-01	28.2000
1919-08-01	29.0000
1919-09-01	34.6200
1919-10-01	37.5000
1919-11-01	41.5000
1919-12-01	51.7500
1920-01-01	57.5000
1920-02-01	61.8800
1920-03-01	75.8000
1920-04-01	89.6900
1920-05-01	105.310
1920-06-01	133.000
1920-07-01	142.500
1920-08-01	138.500
1920-09-01	128.120
1920-10-01	120.000
1920-11-01	112.000
1920-12-01	93.7500
1921-01-01	78.7500
1921-02-01	62.5000
1921-03-01	48.8000
1921-04-01	37.8800
1921-05-01	31.5000
1921-06-01	28.2500
1921-07-01	29.5000
1921-08-01	27.5000
1921-09-01	31.2500
1921-10-01	32.5000
1921-11-01	33.2000
1921-12-01	35.5000
1922-01-01	36.0000
1922-02-01	31.5000
1922-03-01	30.0000
1922-04-01	30.5000
1922-05-01	31.0000
1922-06-01	31.0000
1922-07-01	31.0000
1922-08-01	30.8000
1922-09-01	30.0000
1922-10-01	34.0000
1922-11-01	38.5000
1922-12-01	41.5000
1923-01-01	45.6000
1923-02-01	47.0000
1923-03-01	44.1900
1923-04-01	41.9400
1923-05-01	38.7500
1923-06-01	37.6200
1923-07-01	37.5000
1923-08-01	37.3000
1923-09-01	44.5000
1923-10-01	47.0000
1923-11-01	42.5000
1923-12-01	42.5000
1924-01-01	39.0000
1924-02-01	33.2500
1924-03-01	31.3800
1924-04-01	31.5000
1924-05-01	30.7500
1924-06-01	30.7500
1924-07-01	30.7500
1924-08-01	30.7500
1924-09-01	30.7500
1924-10-01	30.7500
1924-11-01	30.7500
1924-12-01	31.1000
1925-01-01	32.5000
1925-02-01	32.5000
1925-03-01	32.5000
1925-04-01	30.5000
1925-05-01	30.0000
1925-06-01	30.0000
1925-07-01	30.0000
1925-08-01	30.0000
1925-09-01	30.0000
1925-10-01	30.0000
1925-11-01	30.0000
1925-12-01	30.0000
1926-01-01	30.0000
1926-02-01	30.0000
1926-03-01	31.5000
1926-04-01	31.5000
1926-05-01	31.5000
1926-06-01	31.5000
1926-07-01	30.8800
1926-08-01	30.0000
1926-09-01	30.0000
1926-10-01	30.7500
1926-11-01	31.0000
1926-12-01	31.0000
1927-01-01	31.0000
1927-02-01	29.7500
1927-03-01	28.5000
1927-04-01	28.5000
1927-05-01	28.5000
1927-06-01	28.5000
1927-07-01	28.5000
1927-08-01	28.5000
1927-09-01	28.5000
1927-10-01	28.5000
1927-11-01	28.1000
1927-12-01	28.0000
1928-01-01	28.0000
1928-02-01	28.0000
1928-03-01	27.5000
1928-04-01	27.5000
1928-05-01	27.5000
1928-06-01	27.5000
1928-07-01	27.5000
1928-08-01	27.5000
1928-09-01	27.5000
1928-10-01	27.5000
1928-11-01	27.5000
1928-12-01	27.5000
1929-01-01	27.5000
1929-02-01	27.5000
1929-03-01	27.5000
1929-04-01	27.5000
1929-05-01	27.7500
1929-06-01	27.5000
1929-07-01	27.6000
1929-08-01	27.6200
1929-09-01	28.0000
1929-10-01	28.0000
1929-11-01	28.0000
1929-12-01	28.0000
1930-01-01	29.5000
1930-02-01	30.0000
1930-03-01	30.0000
1930-04-01	29.2000
1930-05-01	28.0000
1930-06-01	28.0000
1930-07-01	28.0000
1930-08-01	28.0000
1930-09-01	28.0000
1930-10-01	28.0000
1930-11-01	28.0000
1930-12-01	30.4000
1931-01-01	31.0000
1931-02-01	31.0000
1931-03-01	31.0000
1931-04-01	31.0000
1931-05-01	30.1200
1931-06-01	27.5000
1931-07-01	27.5000
1931-08-01	27.5000
1931-09-01	27.5000
1931-10-01	27.5000
1931-11-01	27.5000
1931-12-01	27.5000
1932-01-01	25.7500
1932-02-01	24.0000
1932-03-01	24.0000
1932-04-01	21.0000
1932-05-01	21.0000
1932-06-01	21.0000
1932-07-01	21.0000
1932-08-01	21.0000
1932-09-01	20.0000
1932-10-01	20.0000
1932-11-01	20.0000
1932-12-01	19.0000
1933-01-01	18.4000
1933-02-01	18.0000
1933-03-01	18.0000
1933-04-01	18.0000
1933-05-01	18.0000
1933-06-01	20.0000
1933-07-01	22.0000
1933-08-01	25.2000
1933-09-01	26.0000
1933-10-01	26.0000
1933-11-01	26.0000
1933-12-01	25.2500
1934-01-01	25.0000
1934-02-01	25.0000
1934-03-01	26.5000
1934-04-01	26.5000
1934-05-01	26.5000
1934-06-01	26.5000
1934-07-01	26.5000
1934-08-01	24.6200
1934-09-01	24.0000
1934-10-01	24.0000
1934-11-01	23.7500
1934-12-01	23.0000
1935-01-01	21.0000
1935-02-01	21.0000
1935-03-01	21.0000
1935-04-01	21.0000
1935-05-01	21.0000
1935-06-01	21.0000
1935-07-01	21.0000
1935-08-01	21.0000
1935-09-01	21.0000
1935-10-01	21.0000
1935-11-01	21.0000
1935-12-01	21.0000
1936-01-01	21.0000
1936-02-01	21.0000
1936-03-01	21.0000
1936-04-01	21.0000
1936-05-01	21.0000
1936-06-01	21.0000
1936-07-01	21.7500
1936-08-01	22.0000
1936-09-01	22.0000
1936-10-01	22.0000
1936-11-01	22.0000
1936-12-01	22.0000
1937-01-01	22.7500
1937-02-01	24.0000
1937-03-01	25.9000
1937-04-01	27.5000
1937-05-01	27.8800
1937-06-01	29.0000
1937-07-01	29.5000
1937-08-01	29.5000
1937-09-01	29.5000
1937-10-01	29.5000
1937-11-01	27.5000
1937-12-01	27.0000
1938-01-01	25.5000
1938-02-01	25.5000
1938-03-01	25.5000
1938-04-01	25.5000
1938-05-01	23.7000
1938-06-01	21.0000
1938-07-01	21.0000
1938-08-01	21.0000
1938-09-01	21.0000
1938-10-01	21.0000
1938-11-01	21.0000
1938-12-01	21.0000
1939-01-01	21.0000
1939-02-01	21.0000
1939-03-01	21.0000
1939-04-01	21.0000
1939-05-01	21.0000
1939-06-01	21.0000
1939-07-01	21.0000
1939-08-01	21.0000
1939-09-01	22.1200
1939-10-01	29.9000
1939-11-01	32.0000
1939-12-01	32.5000
1940-01-01	32.5000
1940-02-01	32.5000
1940-03-01	32.5000
1940-04-01	32.6000
1940-05-01	33.0000
1940-06-01	34.0000
1940-07-01	35.0000
1940-08-01	35.0000
1940-09-01	35.0000
1940-10-01	35.0000
1940-11-01	35.0000
1940-12-01	35.0000
1941-01-01	35.0000
1941-02-01	33.0000
1941-03-01	33.0000
1941-04-01	32.0000
1941-05-01	32.0000
1941-06-01	32.0000
1941-07-01	32.0000
1941-08-01	32.0000
1941-09-01	32.0000
1941-10-01	32.0000
1941-11-01	32.0000
1941-12-01	32.0000
1942-01-01	32.0000