Year Thousands Of Long Tons 1890 16036.0 1891 14591.0 1892 16297.0 1893 11588.0 1894 11880.0 1895 15958.0 1896 16005.0 1897 17518.0 1898 19434.0 1899 24683.0 1900 27553.0 1901 28887.0 1902 35554.0 1903 35019.0 1904 27644.0 1905 42526.0 1906 47750.0 1907 51721.0 1908 35983.0 1909 51294.0 1910 57015.0 1911 43877.0 1912 55150.0 1913 61980.0 1914 41440.0 1915 55526.0 1916 75168.0 1917 75289.0 1918 69658.0 1919 60965.0 1920 67604.0 1921 29491.0 1922 47129.0 1923 69351.0 1924 54267.0 1925 61908.0 1926 67623.0 1927 61741.0 1928 62197.0 1929 73028.0 1930 58409.0 1931 31132.0 1932 9847.00 1933 17553.0 1934 24588.0 1935 30540.0 1936 48789.0 1937 72094.0 1938 28447.0