Year Kilotonnes
1850 25.64
1851 28.76
1852 35.93
1853 39.11
1854 43.63
1855 50.42
1856 58.43
1857 62.79
1858 72.12
1859 68.44
1860 72.65
1861 75.35
1862 85.83
1863 96.92
1864 107.8
1865 118.3
1866 119.3
1867 127.8
1868 144.1
1869 149.3
1870 159.6
1871 180.2
1872 195.1
1873 210.7
1874 223.6
1875 221.1
1876 226.7
1877 221.3
1878 231.4
1879 250.1
1880 280.7
1881 293.3
1882 307.1
1883 333.6
1884 345.5
1885 356.9
1886 366.5
1887 372.2
1888 406.4
1889 433.6
1890 455.4
1891 478.1
1892 462
1893 484.4
1894 493.5
1895 519.9
1896 551.2
1897 574
1898 616.9
1899 638.4
1900 675.5
1901 683.7
1902 669
1903 699.7
1904 711.3
1905 761
1906 797.3
1907 863.5
1908 899.2
1909 912.8
1910 911.2
1911 965.2
1912 1073
1913 1119
1914 952.2
1915 934.3
1916 1050
1917 1069
1918 1006
1919 747.8
1920 677.7
1921 598.8
1922 516.6
1923 344.1
1924 285.4
1925 261.6
1926 265.2
1927 330.9
1928 342
1929 398.5
1930 315.9
1931 294.3
1932 218.6
1933 212.6
1934 218.1
1935 217.3
1936 243
1937 294.4
1938 320.6
1939 145.4
1940 427.5
1941 714.5
1942 1053
1943 1478
1944 1344
1945 206.8
1946 1031
1947 1062
1948 756
1949 652.9
1950 519.7
1951 563.6
1952 592
1953 642.1
1954 675
1955 706.1
1956 758.7
1957 811.8
1958 802.2
1959 855.1
1960 899.4
1961 931.3
1962 970.5
1963 1036
1964 1084
1965 1110
1966 1135
1967 1146
1968 1199
1969 1280
1970 1360
1971 1437
1972 1509
1973 1568
1974 1607
1975 1775
1976 1850
1977 1932
1978 1983
1979 2035
1980 2050
1981 1869
1982 2048
1983 2044
1984 2044
1985 2150
1986 2100
1987 2100
1988 2090
1989 1955
1990 1605
1991 1578
1992 1410
1993 1362
1994 1302
1995 1188
1996 1184
1997 1090
1998 948.5
1999 859.5
2000 755.5