Year Kilotonnes
1850 0.1589
1851 0.2241
1852 0.278
1853 0.3489
1854 0.4821
1855 0.5604
1856 0.6729
1857 0.7347
1858 0.741
1859 0.8635
1860 0.9239
1861 1.09
1862 1.08
1863 1.123
1864 1.306
1865 1.353
1866 1.458
1867 1.634
1868 1.699
1869 1.659
1870 1.811
1871 1.844
1872 1.935
1873 1.986
1874 2.233
1875 2.521
1876 2.446
1877 2.869
1878 2.759
1879 2.872
1880 3.042
1881 3.215
1882 3.503
1883 3.766
1884 3.952
1885 4.393
1886 4.385
1887 4.377
1888 4.774
1889 5.199
1890 5.069
1891 5.689
1892 5.948
1893 6.109
1894 6.997
1895 7.435
1896 7.608
1897 8.114
1898 8.205
1899 9.44
1900 9.8
1901 9.397
1902 9.885
1903 9.862
1904 9.801
1905 9.8
1906 10.26
1907 11.51
1908 13.2
1909 13.59
1910 14.19
1911 14.7
1912 16.3
1913 16.83
1914 18.46
1915 20.28
1916 19.96
1917 12.7
1918 14.68
1919 16.75
1920 17.57
1921 13.53
1922 19.8
1923 21.11
1924 23.22
1925 22.98
1926 22.41
1927 29.32
1928 34.13
1929 43.44
1930 45.62
1931 37.06
1932 46.25
1933 51.25
1934 53.97
1935 55.08
1936 55.47
1937 54.85
1938 48.41
1939 53.13
1940 31.77
1941 27
1942 24.49
1943 25.22
1944 21.26
1945 14.53
1946 32.97
1947 60.09
1948 78.98
1949 100.4
1950 57.11
1951 82.42
1952 60.34
1953 62.61
1954 62.91
1955 73.33
1956 73.25
1957 72.6
1958 64.53
1959 64.08
1960 74.01
1961 105.3
1962 109.4
1963 97.43
1964 92.65
1965 80.43
1966 72.35
1967 71.57
1968 86.57
1969 83.17
1970 85.5
1971 75.3
1972 76.37
1973 77.24
1974 78.93
1975 72
1976 81.02
1977 81.28
1978 74.67
1979 73.37
1980 68.65
1981 64
1982 55.35
1983 51.9
1984 47.9
1985 49.1
1986 45.7
1987 36.5
1988 33.8
1989 28.82
1990 26
1991 22
1992 18
1993 17.5
1994 17.5
1995 16.5
1996 16.5
1997 15
1998 15
1999 14
2000 13.5