Year Kilotonnes
1850 0.4021
1851 0.2683
1852 0.5047
1853 0.4543
1854 0.5632
1855 0.5447
1856 0.7493
1857 0.8582
1858 0.9035
1859 0.8531
1860 1.217
1861 1.198
1862 1.339
1863 1.192
1864 1.524
1865 1.505
1866 1.263
1867 1.595
1868 1.544
1869 1.875
1870 1.665
1871 1.518
1872 1.85
1873 1.642
1874 1.848
1875 1.863
1876 2.004
1877 1.763
1878 1.904
1879 1.854
1880 1.677
1881 1.695
1882 1.866
1883 1.389
1884 1.844
1885 1.704
1886 1.589
1887 1.35
1888 1.647
1889 1.318
1890 1.442
1891 1.344
1892 1.531
1893 1.703
1894 1.773
1895 1.793
1896 1.818
1897 1.83
1898 2.21
1899 2.415
1900 2.633
1901 3.444
1902 3.546
1903 4.041
1904 4.244
1905 4.242
1906 7.067
1907 9.888
1908 12.71
1909 12.7
1910 16.93
1911 16.92
1912 16.91
1913 12.68
1914 25.34
1915 37.99
1916 42.19
1917 46.38
1918 54.79
1919 33.7
1920 33.68
1921 33.49
1922 45.8
1923 45.54
1924 49.4
1925 49.12
1926 48.84
1927 56.65
1928 68.39
1929 56
1930 63.62
1931 51.39
1932 19.65
1933 27.34
1934 23.3
1935 23.16
1936 46.03
1937 49.56
1938 53.05
1939 41.42
1940 37.42
1941 37.04
1942 36.66
1943 25.4
1944 25.25
1945 32.53
1946 42.73
1947 46.05
1948 61.21
1949 69.23
1950 102.6
1951 111.1
1952 109
1953 116
1954 113.8
1955 127.5
1956 120.7
1957 196.2
1958 240.4
1959 207.7
1960 188.2
1961 159.9
1962 177
1963 183.6
1964 179
1965 185.2
1966 183.7
1967 198.3
1968 210.6
1969 198.9
1970 193.6
1971 195.7
1972 195.2
1973 199.4
1974 222.4
1975 225.7
1976 212.8
1977 232.4
1978 221.9
1979 214.4
1980 238.3
1981 244
1982 223.4
1983 201.8
1984 197
1985 191.7
1986 190.2
1987 206.5
1988 233.1
1989 239.3
1990 216.5
1991 216.4
1992 206.4
1993 192
1994 201.5
1995 172.9
1996 195.3
1997 181.9
1998 184.5
1999 200.2
2000 246