Year Kilotonnes
1850 0.6213
1851 0.6969
1852 1.393
1853 2.08
1854 2.76
1855 3.453
1856 4.198
1857 4.935
1858 5.593
1859 6.305
1860 6.998
1861 8.254
1862 8.344
1863 8.825
1864 9.617
1865 9.764
1866 10.9
1867 12.39
1868 10.25
1869 14.12
1870 15.56
1871 21
1872 21.81
1873 20.54
1874 24.21
1875 28.82
1876 35.18
1877 35.1
1878 46.63
1879 47.94
1880 55.92
1881 58.7
1882 62.37
1883 70.63
1884 69.17
1885 74.12
1886 77.21
1887 76.12
1888 87.37
1889 102.6
1890 99.7
1891 105.9
1892 113.6
1893 128.8
1894 141.5
1895 155.1
1896 160.2
1897 184.5
1898 207
1899 243.6
1900 276.5
1901 279.6
1902 273.5
1903 287.1
1904 314.1
1905 287
1906 327
1907 376.1
1908 382.6
1909 396.9
1910 386
1911 421.3
1912 459.1
1913 531.6
1914 443.5
1915 396.8
1916 436.1
1917 393.1
1918 159.8
1919 122.3
1920 111.5
1921 122.2
1922 151.4
1923 168.7
1924 211.4
1925 216.2
1926 326.2
1927 412.7
1928 459.4
1929 525.6
1930 641.1
1931 762.2
1932 838.8
1933 968.4
1934 1185
1935 1373
1936 1599
1937 1644
1938 1745
1939 1911
1940 2150
1941 2119
1942 2089
1943 2059
1944 2028
1945 1997
1946 2192
1947 2433
1948 2740
1949 3048
1950 3353
1951 3610
1952 3846
1953 4056
1954 4406
1955 4933
1956 5371
1957 5718
1958 5952
1959 6061
1960 6145
1961 6094
1962 6246
1963 6353
1964 6575
1965 6879
1966 7016
1967 7191
1968 7229
1969 7385
1970 7609
1971 7781
1972 7984
1973 8200
1974 8496
1975 8751
1976 8789
1977 9005
1978 9092
1979 9040
1980 9103
1981 8624
1982 8829
1983 8574
1984 8498
1985 9553
1986 9826
1987 9996
1988 10060
1989 9676
1990 8776
1991 8084
1992 7133
1993 6262
1994 5297
1995 4886
1996 4635
1997 4189
1998 4036
1999 4087
2000 3963