Year Kilotonnes
1850 0
1851 0
1852 0
1853 0
1854 0
1855 0
1856 0
1857 0
1858 0
1859 0
1860 0
1861 0
1862 0
1863 0
1864 0
1865 0
1866 0
1867 0
1868 0
1869 0
1870 0
1871 0
1872 0
1873 0
1874 0
1875 0
1876 0
1877 0
1878 0
1879 0
1880 0
1881 0.1463
1882 0.2926
1883 0.4391
1884 0.5857
1885 0.7324
1886 0.8792
1887 1.026
1888 1.173
1889 1.32
1890 1.467
1891 1.615
1892 1.762
1893 1.91
1894 2.057
1895 2.205
1896 2.353
1897 2.501
1898 2.649
1899 3.358
1900 4.067
1901 4.958
1902 5.849
1903 0.6786
1904 7.829
1905 8.949
1906 9.209
1907 11.24
1908 11.65
1909 10.22
1910 10.63
1911 10.93
1912 11.3
1913 12.74
1914 10.01
1915 7.537
1916 3.711
1917 5.611
1918 5.42
1919 8.551
1920 8.073
1921 5.242
1922 6.295
1923 9.127
1924 11.75
1925 14.63
1926 19.11
1927 20.97
1928 19.98
1929 22.75
1930 25.34
1931 24.39
1932 24.81
1933 29.17
1934 36.54
1935 37.47
1936 37.64
1937 38.93
1938 31.47
1939 35.71
1940 40.64
1941 42.75
1942 37.21
1943 46.47
1944 52.74
1945 52.32
1946 51.29
1947 54.63
1948 56.96
1949 58.72
1950 60.74
1951 66.05
1952 67.59
1953 82.5
1954 85.65
1955 84.13
1956 90.38
1957 99.21
1958 101.8
1959 99.65
1960 95.24
1961 98.7
1962 115
1963 129
1964 143.2
1965 142.5
1966 157.5
1967 161
1968 166.5
1969 163.8
1970 164
1971 174.9
1972 195.5
1973 206.7
1974 230.5
1975 234.9
1976 248.5
1977 261.6
1978 258.4
1979 329.7
1980 323.5
1981 364.4
1982 404.9
1983 438.9
1984 514.7
1985 662
1986 760.5
1987 789
1988 685.8
1989 859.4
1990 797.1
1991 807.7
1992 806.6
1993 803.5
1994 826.5
1995 885.6
1996 920.8
1997 1012
1998 1003
1999 930.1
2000 1027