Year Kilotonnes
1850 2.833
1851 3.178
1852 4.209
1853 3.844
1854 4.996
1855 5.134
1856 5.305
1857 6.445
1858 7.415
1859 8.398
1860 9.958
1861 10.42
1862 12.23
1863 12.75
1864 12.57
1865 13.16
1866 15.81
1867 19.59
1868 19.54
1869 22.1
1870 23.89
1871 30.62
1872 32.93
1873 33.96
1874 29.36
1875 30.48
1876 32.57
1877 33.42
1878 33.61
1879 33.88
1880 38.24
1881 41.13
1882 43.1
1883 49.24
1884 52.39
1885 52.71
1886 50.2
1887 51.67
1888 55.77
1889 58.82
1890 65.63
1891 69.85
1892 73.3
1893 79.45
1894 86.05
1895 93.02
1896 100.2
1897 102.3
1898 117.8
1899 113.6
1900 133.3
1901 134.5
1902 129.7
1903 134.2
1904 137.8
1905 148.3
1906 157.2
1907 160.9
1908 173.3
1909 187.7
1910 187.6
1911 196.5
1912 199.9
1913 214.6
1914 192.6
1915 192.2
1916 192.8
1917 189.1
1918 168
1919 146.6
1920 125.6
1921 139.5
1922 157.8
1923 175.1
1924 166.5
1925 145.2
1926 148.2
1927 167.6
1928 174.7
1929 186.5
1930 160.2
1931 152.3
1932 145.9
1933 145.3
1934 153.4
1935 163.8
1936 173.7
1937 195.8
1938 201.1
1939 227.3
1940 246
1941 271.3
1942 283.9
1943 283.8
1944 232.5
1945 112.1
1946 176.1
1947 260.2
1948 336.6
1949 408.2
1950 461.5
1951 507
1952 587.5
1953 633.6
1954 617.3
1955 606.7
1956 566.7
1957 615.1
1958 674.6
1959 704.8
1960 739
1961 788.6
1962 806.2
1963 873.2
1964 922.5
1965 908
1966 883.7
1967 795.2
1968 807.6
1969 794.5
1970 850.6
1971 844.6
1972 809.6
1973 847.3
1974 833.2
1975 821.7
1976 821.6
1977 834
1978 830.6
1979 830.6
1980 816.5
1981 790
1982 772.5
1983 740
1984 720
1985 702
1986 681
1987 642.5
1988 609
1989 551
1990 505
1991 456.5
1992 413.5
1993 378.5
1994 370.5
1995 352.5
1996 336.5
1997 329.5
1998 296
1999 295
2000 243