Month	Average Price Per Short Ton In Dollars
1920-06-01	12.8100
1920-07-01	13.0700
1920-08-01	13.5500
1920-09-01	14.2000
1920-10-01	14.4000
1920-11-01	14.8700
1920-12-01	14.7100
1921-01-01	14.5400
1921-02-01	14.2300
1921-03-01	13.9000
1921-04-01	13.1700
1921-05-01	13.1200
1921-06-01	13.2400
1921-07-01	13.3000
1921-08-01	13.3600
1921-09-01	13.3400
1921-10-01	13.3000
1921-11-01	13.3400
1921-12-01	13.3000
1922-01-01	13.2100
1922-02-01	13.1400
1922-03-01	13.1400
1922-04-01	13.1400
1922-05-01	13.1400
1922-06-01	13.1400
1922-07-01	13.1400
1922-09-01	14.2100
1922-10-01	13.8300
1922-11-01	13.8300
1922-12-01	14.5400
1923-01-01	14.4500
1923-02-01	14.9000
1923-03-01	14.1300
1923-04-01	13.6700
1923-05-01	13.6700
1923-06-01	13.6700
1923-07-01	13.8300
1923-08-01	14.0800
1923-09-01	14.5000
1923-10-01	14.5800
1923-11-01	14.5800
1923-12-01	14.5000
1924-01-01	14.4200
1924-02-01	14.3800
1924-03-01	14.3300
1924-04-01	13.5000
1924-05-01	13.5700
1924-06-01	13.6300
1924-07-01	13.7000
1924-08-01	13.7800
1924-09-01	14.1300
1924-10-01	14.0800
1924-11-01	14.0800
1924-12-01	14.3300
1925-01-01	14.3300
1925-02-01	14.4200
1925-03-01	14.4200
1925-04-01	13.6700
1925-05-01	13.6800
1925-06-01	13.7800
1925-07-01	13.8800
1925-08-01	14.0300
1925-09-01	15.0400
1925-10-01	17.0400
1925-11-01	19.6300
1926-03-01	15.2900
1926-04-01	14.5400
1926-05-01	14.5000
1926-06-01	14.5000
1926-07-01	14.5000
1926-08-01	14.5000
1926-09-01	14.5400
1926-10-01	14.5000
1926-11-01	14.5000
1926-12-01	14.5000
1927-01-01	14.5000
1927-02-01	14.5000
1927-03-01	14.2900
1927-04-01	13.5000
1927-05-01	13.5400
1927-06-01	13.7900
1927-07-01	13.7900
1927-08-01	13.7900
1927-09-01	14.0400
1927-10-01	14.0800
1927-11-01	14.4600
1927-12-01	14.4200
1928-01-01	14.4200
1928-02-01	14.4200
1928-03-01	14.4200
1928-04-01	13.7500
1928-05-01	13.7500
1928-06-01	13.9600
1928-07-01	14.0000
1928-08-01	14.0000
1928-09-01	14.2100
1928-10-01	14.2500
1928-11-01	14.2500
1928-12-01	14.2900
1929-01-01	14.3300
1929-02-01	14.2500
1929-03-01	14.2900
1929-04-01	13.3300
1929-05-01	13.3300
1929-06-01	13.5800
1929-07-01	13.6300
1929-08-01	13.7500
1929-09-01	13.8300
1929-10-01	14.0400
1929-11-01	14.0800
1929-12-01	14.0800
1930-01-01	14.1300
1930-02-01	14.0800
1930-03-01	14.0800
1930-04-01	14.0800
1930-05-01	12.7100
1930-06-01	12.7100
1930-07-01	13.0800
1930-08-01	13.1300
1930-09-01	13.5600
1930-10-01	13.5800
1930-11-01	13.6700
1930-12-01	13.6700
1931-01-01	13.6700
1931-02-01	13.6700
1931-03-01	13.6700
1931-04-01	12.9200
1931-05-01	12.9600
1931-06-01	13.1700
1931-07-01	13.4600
1931-08-01	13.7500
1931-09-01	13.9200
1931-10-01	13.8800
1931-11-01	13.7900
1931-12-01	13.8300
1932-01-01	13.8300
1932-02-01	13.8300
1932-03-01	13.3800
1932-04-01	11.4200
1932-05-01	11.5400
1932-06-01	11.6700
1932-07-01	11.7700
1932-08-01	12.0000
1932-09-01	12.2500
1932-10-01	12.2100
1932-11-01	12.2900
1932-12-01	12.2900
1933-01-01	11.6400
1933-02-01	11.4500
1933-03-01	11.4000
1933-04-01	11.4500
1933-05-01	11.2500
1933-06-01	11.3000
1933-07-01	11.5700
1933-08-01	11.8700
1933-09-01	12.4000
1933-10-01	12.3500
1933-11-01	12.3000
1933-12-01	12.2000
1934-01-01	12.3500
1934-02-01	12.4000
1934-03-01	12.4000
1934-04-01	11.0500
1934-05-01	11.0500
1934-06-01	11.0500
1934-07-01	11.2000
1934-08-01	11.4500
1934-09-01	12.2500
1934-10-01	12.2000
1934-11-01	12.2000
1934-12-01	12.4400
1935-01-01	12.1400
1935-02-01	12.1400
1935-03-01	12.1400
1935-04-01	9.84000
1935-05-01	9.85000
1935-06-01	9.79000
1935-09-01	11.4800
1935-12-01	11.9900
1936-03-01	11.5800
1936-06-01	11.3100
1936-09-01	11.7100
1936-12-01	11.8300
1937-03-01	11.8300
1937-06-01	10.3700
1937-09-01	10.6200
1937-12-01	11.0100
1938-03-01	11.0000
1938-06-01	10.2700
1938-09-01	10.2900
1938-12-01	11.2500
1939-03-01	11.2100
1939-06-01	10.2900
1939-09-01	10.3100
1939-12-01	10.4600
1940-03-01	11.3000
1940-06-01	11.1900
1940-09-01	11.5000
1940-10-01	11.4900
1940-11-01	11.7100
1940-12-01	11.7200
1941-01-01	11.7200
1941-02-01	11.7200
1941-03-01	11.7200
1941-04-01	11.7200
1941-05-01	11.7200
1941-06-01	11.5500
1941-07-01	11.9200
1941-08-01	12.2100
1941-09-01	12.4400
1941-10-01	12.4700
1941-11-01	12.3500
1941-12-01	12.3500
1942-01-01	12.4600
1942-02-01	12.4900
1942-03-01	12.4900
1942-04-01	12.4700
1942-05-01	12.4500
1942-06-01	12.4200
1942-07-01	12.4200
1942-08-01	12.4200
1942-09-01	12.4200
1942-10-01	12.4200
1942-11-01	12.4200
1942-12-01	12.4300
1943-01-01	13.2400
1943-02-01	13.2100
1943-03-01	13.1600
1943-04-01	13.1600
1943-05-01	13.1600
1943-06-01	13.1700
1943-07-01	13.1200
1943-08-01	13.1200
1943-09-01	13.1200
1943-10-01	13.1400
1943-11-01	13.4300
1943-12-01	14.1300
1944-01-01	14.1300
1944-02-01	14.6200
1944-03-01	14.1200
1944-04-01	14.1200
1944-05-01	14.1200
1944-06-01	13.9700
1944-07-01	13.9700