Year	Short Tons
1918	1.95000
1919	2.35000
1920	2.27000
1921	2.65000
1922	2.40000
1923	2.39000
1924	1.74000
1925	2.57000
1926	2.57000
1927	1.86000
1928	1.93000
1929	1.96000
1930	1.76000
1931	2.19000
1932	2.34000
1933	1.97000
1934	1.73000
1935	2.14000
1936	1.63000
1937	2.23000
1938	2.56000
1939	2.66000
1940	2.31000
1941	2.56000
1942	2.64000
1943	2.29000
1944	2.13000
1945	2.34000
1946	2.48000
1947	2.22000
1948	2.71000
1949	3.07000
1950	2.87000