Year Kilotonnes
1850 0
1851 0.1532
1852 0.3063
1853 0.4595
1854 0.6126
1855 0.7658
1856 0.9189
1857 1.072
1858 1.225
1859 1.378
1860 1.532
1861 1.685
1862 1.838
1863 1.991
1864 2.144
1865 2.297
1866 2.451
1867 2.604
1868 2.757
1869 2.91
1870 3.063
1871 3.677
1872 4.303
1873 4.93
1874 5.557
1875 9.281
1876 10.5
1877 11.33
1878 13.65
1879 15.78
1880 16.2
1881 16.77
1882 18.21
1883 20.99
1884 25.91
1885 30.97
1886 29.96
1887 35.04
1888 41.03
1889 49.8
1890 55.27
1891 62.12
1892 65.65
1893 61.71
1894 73.79
1895 76.78
1896 80.81
1897 82.14
1898 97.67
1899 103.4
1900 111.8
1901 129.6
1902 140.4
1903 151.4
1904 156
1905 169.1
1906 186.3
1907 198.6
1908 210.8
1909 221.6
1910 233.2
1911 257.8
1912 293.6
1913 317.1
1914 328.5
1915 320
1916 387.5
1917 431.8
1918 414.4
1919 421.8
1920 385.7
1921 335.2
1922 346.5
1923 365.9
1924 383.1
1925 399.9
1926 401.1
1927 419.8
1928 424.4
1929 439
1930 418.6
1931 383.2
1932 376.7
1933 412.6
1934 444
1935 462.1
1936 496.9
1937 527.1
1938 560.3
1939 585.5
1940 632.3
1941 629.1
1942 619.1
1943 656.1
1944 625.8
1945 328.1
1946 224.4
1947 297.1
1948 361.3
1949 408.5
1950 449.8
1951 543.1
1952 590
1953 673
1954 659.6
1955 670.7
1956 770.9
1957 872
1958 851.8
1959 900.4
1960 1066
1961 1190
1962 1252
1963 1352
1964 1435
1965 1491
1966 1636
1967 1860
1968 2046
1969 2233
1970 2486
1971 2167
1972 1921
1973 1803
1974 1608
1975 1293
1976 841
1977 842.6
1978 708.4
1979 681.5
1980 638.5
1981 624.9
1982 566.7
1983 524.5
1984 521.6
1985 456.6
1986 417.5
1987 403.2
1988 426
1989 438
1990 488
1991 484.5
1992 465
1993 443.5
1994 472
1995 457.5
1996 438.5
1997 437.5
1998 427
1999 404.5
2000 410