Year	Thousands Of Short Tons
1917	27000.0
1918	33700.0
1919	38200.0
1920	42800.0
1921	43900.0
1922	43800.0
1923	45100.0
1924	46300.0
1925	48200.0
1926	52700.0
1927	57900.0
1928	59600.0
1929	60200.0
1930	61500.0
1931	63500.0
1932	62800.0
1933	63100.0
1934	62800.0
1935	62400.0
1936	62200.0
1937	62727.0
1938	61300.0
1939	63000.0
1940	62391.0
1941	32562.0
1942	64555.0
1943	71378.0
1944	72330.0
1945	71399.0
1946	71113.0
1947	72549.0
1948	74500.0
1949	73710.0
1950	72488.0
1951	74228.0
1952	76428.0
1953	78258.0
1954	78596.0
1955	79676.0
1956	79965.0
1957	80299.0
1958	82498.0
1959	81448.0
1960	78877.0