Year	Kilotonnes
1850	0.6213
1851	0.6969
1852	1.393
1853	2.08
1854	2.76
1855	3.453
1856	4.198
1857	4.935
1858	5.593
1859	6.305
1860	6.998
1861	8.254
1862	8.344
1863	8.825
1864	9.617
1865	9.764
1866	10.9
1867	12.39
1868	10.25
1869	14.12
1870	15.56
1871	21
1872	21.81
1873	20.54
1874	24.21
1875	28.82
1876	35.18
1877	35.1
1878	46.63
1879	47.94
1880	55.92
1881	58.7
1882	62.37
1883	70.63
1884	69.17
1885	74.12
1886	77.21
1887	76.12
1888	87.37
1889	102.6
1890	99.7
1891	105.9
1892	113.6
1893	128.8
1894	141.5
1895	155.1
1896	160.2
1897	184.5
1898	207
1899	243.6
1900	276.5
1901	279.6
1902	273.5
1903	287.1
1904	314.1
1905	287
1906	327
1907	376.1
1908	382.6
1909	396.9
1910	386
1911	421.3
1912	459.1
1913	531.6
1914	443.5
1915	396.8
1916	436.1
1917	393.1
1918	159.8
1919	122.3
1920	111.5
1921	122.2
1922	151.4
1923	168.7
1924	211.4
1925	216.2
1926	326.2
1927	412.7
1928	459.4
1929	525.6
1930	641.1
1931	762.2
1932	838.8
1933	968.4
1934	1185
1935	1373
1936	1599
1937	1644
1938	1745
1939	1911
1940	2150
1941	2119
1942	2089
1943	2059
1944	2028
1945	1997
1946	2192
1947	2433
1948	2740
1949	3048
1950	3353
1951	3610
1952	3846
1953	4056
1954	4406
1955	4933
1956	5371
1957	5718
1958	5952
1959	6061
1960	6145
1961	6094
1962	6246
1963	6353
1964	6575
1965	6879
1966	7016
1967	7191
1968	7229
1969	7385
1970	7609
1971	7781
1972	7984
1973	8200
1974	8496
1975	8751
1976	8789
1977	9005
1978	9092
1979	9040
1980	9103
1981	8624
1982	8829
1983	8574
1984	8498
1985	9553
1986	9826
1987	9996
1988	10060
1989	9676
1990	8776
1991	8084
1992	7133
1993	6262
1994	5297
1995	4886
1996	4635
1997	4189
1998	4036
1999	4087
2000	3963