Year Kilotonnes
1850 0.07498
1851 0.08411
1852 0.1681
1853 0.2511
1854 0.3331
1855 0.4167
1856 0.5066
1857 0.5955
1858 0.6749
1859 0.7609
1860 0.8445
1861 0.9961
1862 1.007
1863 1.065
1864 1.161
1865 1.178
1866 1.315
1867 1.495
1868 1.236
1869 1.704
1870 1.877
1871 2.535
1872 2.632
1873 2.479
1874 2.922
1875 3.478
1876 4.246
1877 4.236
1878 5.627
1879 5.785
1880 6.748
1881 7.084
1882 7.527
1883 8.523
1884 8.347
1885 8.945
1886 9.318
1887 9.186
1888 10.54
1889 12.38
1890 12.03
1891 12.78
1892 13.71
1893 15.55
1894 17.08
1895 18.72
1896 19.33
1897 22.26
1898 24.99
1899 29.39
1900 33.36
1901 33.74
1902 33
1903 34.64
1904 37.91
1905 34.64
1906 39.46
1907 45.39
1908 46.17
1909 47.9
1910 46.58
1911 50.84
1912 55.4
1913 64.16
1914 53.52
1915 47.88
1916 52.62
1917 47.44
1918 19.28
1919 14.76
1920 13.46
1921 14.75
1922 18.27
1923 20.36
1924 25.51
1925 26.09
1926 39.37
1927 49.81
1928 55.44
1929 63.43
1930 77.37
1931 91.99
1932 101.2
1933 116.9
1934 143
1935 165.7
1936 192.9
1937 198.4
1938 210.6
1939 230.6
1940 259.5
1941 255.7
1942 252.1
1943 248.5
1944 244.7
1945 241
1946 264.5
1947 293.7
1948 330.7
1949 367.9
1950 404.7
1951 435.7
1952 464.1
1953 489.4
1954 531.8
1955 595.3
1956 648.2
1957 690.1
1958 718.3
1959 731.5
1960 741.5
1961 735.4
1962 753.8
1963 766.6
1964 793.5
1965 830.2
1966 846.7
1967 867.8
1968 872.5
1969 891.2
1970 918.3
1971 939
1972 963.5
1973 989.6
1974 1025
1975 1056
1976 1061
1977 1087
1978 1097
1979 1091
1980 1099
1981 1024
1982 1051
1983 1016
1984 1044
1985 1285
1986 1387
1987 1429
1988 1490
1989 1460
1990 1302
1991 1233
1992 1258
1993 1184
1994 1092
1995 1056
1996 1114
1997 1197
1998 1232
1999 1352
2000 1603