Year Kilotonnes
1850 0.09802
1851 0.06539
1852 0.1308
1853 0.1962
1854 0.2615
1855 0.3269
1856 0.3923
1857 0.4577
1858 0.5231
1859 0.5885
1860 0.6539
1861 0.7192
1862 0.7846
1863 0.85
1864 0.9154
1865 0.9808
1866 1.046
1867 1.112
1868 1.177
1869 1.242
1870 1.308
1871 1.373
1872 1.438
1873 1.596
1874 1.753
1875 1.91
1876 2.067
1877 2.224
1878 2.382
1879 2.539
1880 2.696
1881 2.854
1882 3.012
1883 3.169
1884 4.412
1885 4.889
1886 5.508
1887 5.841
1888 9.242
1889 10.2
1890 9.427
1891 12.63
1892 19.06
1893 22.63
1894 24.71
1895 26.07
1896 24.13
1897 27.14
1898 32.06
1899 37.8
1900 38.09
1901 58.64
1902 63.11
1903 74.36
1904 80.79
1905 97.47
1906 92.06
1907 90.64
1908 85.69
1909 103
1910 97.02
1911 142.7
1912 124
1913 81.3
1914 51.12
1915 75.78
1916 97.33
1917 111.5
1918 151.5
1919 123.4
1920 127.1
1921 89.12
1922 54.76
1923 118.2
1924 108.6
1925 155.9
1926 184.8
1927 199.7
1928 206.5
1929 216.2
1930 178
1931 145.7
1932 103.2
1933 115.8
1934 161
1935 150.6
1936 145.3
1937 187.6
1938 224.3
1939 208.9
1940 207.9
1941 203.5
1942 216.3
1943 249
1944 223.3
1945 252.6
1946 252
1947 278.1
1948 277.2
1949 257.4
1950 327
1951 351.1
1952 329.3
1953 334.7
1954 351
1955 359.2
1956 346.7
1957 337.3
1958 342.8
1959 340.5
1960 336.7
1961 320
1962 314.3
1963 327.9
1964 314.5
1965 326.9
1966 335.3
1967 358
1968 376.7
1969 383.4
1970 394.5
1971 379.1
1972 398.3
1973 425.7
1974 516.5
1975 544.6
1976 578.4
1977 665.2
1978 698.9
1979 774.6
1980 990.8
1981 1078
1982 1019
1983 880.3
1984 967.5
1985 975.9
1986 975.4
1987 1065
1988 1060
1989 1132
1990 1159
1991 1126
1992 1115
1993 1090
1994 1248
1995 1096
1996 1152
1997 1261
1998 1398
1999 1313
2000 1378