Year Kilotonnes
1850 5.71
1851 4.579
1852 5.732
1853 2.317
1854 1.185
1855 1.196
1856 4.633
1857 4.644
1858 4.655
1859 4.666
1860 5.818
1861 5.829
1862 6.981
1863 8.133
1864 10.43
1865 9.296
1866 13.88
1867 18.46
1868 19.61
1869 19.63
1870 10.51
1871 12.81
1872 13.97
1873 13.99
1874 12.87
1875 12.88
1876 12.88
1877 14.02
1878 10.6
1879 10.59
1880 10.59
1881 21
1882 23.67
1883 28.22
1884 34.06
1885 30.28
1886 26.75
1887 25.5
1888 29.71
1889 34.82
1890 34.76
1891 42.23
1892 38.36
1893 41.56
1894 44.73
1895 48.22
1896 53.01
1897 62.2
1898 69.61
1899 80.73
1900 84.3
1901 89.6
1902 83.83
1903 88.41
1904 94.52
1905 106.3
1906 111.4
1907 133.2
1908 134.2
1909 124.8
1910 145.2
1911 154.4
1912 164.6
1913 167.8
1914 148.7
1915 130.7
1916 121
1917 121.4
1918 125.5
1919 81.99
1920 103.8
1921 96.43
1922 105.4
1923 119.6
1924 118.1
1925 118.3
1926 114.5
1927 123.7
1928 117.3
1929 114.5
1930 109.7
1931 94.77
1932 108.4
1933 110.6
1934 112.2
1935 119.6
1936 131.4
1937 146.2
1938 152.2
1939 160.9
1940 158.3
1941 170.5
1942 169.8
1943 160.6
1944 160.7
1945 148.6
1946 152.8
1947 156.3
1948 162.1
1949 164.7
1950 182.1
1951 185.3
1952 198.5
1953 214.7
1954 243.3
1955 285.2
1956 322.1
1957 335.3
1958 359.1
1959 375.5
1960 406.1
1961 396.4
1962 417.5
1963 444.3
1964 432.6
1965 432.9
1966 457.5
1967 468
1968 487.2
1969 497.4
1970 502.6
1971 458
1972 486.3
1973 489.9
1974 525.7
1975 537.3
1976 577.5
1977 609.6
1978 591.6
1979 609.2
1980 574.8
1981 622.2
1982 690.7
1983 670.4
1984 627.1
1985 618.8
1986 646.4
1987 712.8
1988 631.2
1989 766
1990 818
1991 839
1992 889
1993 914.5
1994 950
1995 898
1996 926.5
1997 920.5
1998 914
1999 962.5
2000 1212