Year	Kilotonnes
1850	0.07498
1851	0.08411
1852	0.1681
1853	0.2511
1854	0.3331
1855	0.4167
1856	0.5066
1857	0.5955
1858	0.6749
1859	0.7609
1860	0.8445
1861	0.9961
1862	1.007
1863	1.065
1864	1.161
1865	1.178
1866	1.315
1867	1.495
1868	1.236
1869	1.704
1870	1.877
1871	2.535
1872	2.632
1873	2.479
1874	2.922
1875	3.478
1876	4.246
1877	4.236
1878	5.627
1879	5.785
1880	6.748
1881	7.084
1882	7.527
1883	8.523
1884	8.347
1885	8.945
1886	9.318
1887	9.186
1888	10.54
1889	12.38
1890	12.03
1891	12.78
1892	13.71
1893	15.55
1894	17.08
1895	18.72
1896	19.33
1897	22.26
1898	24.99
1899	29.39
1900	33.36
1901	33.74
1902	33
1903	34.64
1904	37.91
1905	34.64
1906	39.46
1907	45.39
1908	46.17
1909	47.9
1910	46.58
1911	50.84
1912	55.4
1913	64.16
1914	53.52
1915	47.88
1916	52.62
1917	47.44
1918	19.28
1919	14.76
1920	13.46
1921	14.75
1922	18.27
1923	20.36
1924	25.51
1925	26.09
1926	39.37
1927	49.81
1928	55.44
1929	63.43
1930	77.37
1931	91.99
1932	101.2
1933	116.9
1934	143
1935	165.7
1936	192.9
1937	198.4
1938	210.6
1939	230.6
1940	259.5
1941	255.7
1942	252.1
1943	248.5
1944	244.7
1945	241
1946	264.5
1947	293.7
1948	330.7
1949	367.9
1950	404.7
1951	435.7
1952	464.1
1953	489.4
1954	531.8
1955	595.3
1956	648.2
1957	690.1
1958	718.3
1959	731.5
1960	741.5
1961	735.4
1962	753.8
1963	766.6
1964	793.5
1965	830.2
1966	846.7
1967	867.8
1968	872.5
1969	891.2
1970	918.3
1971	939
1972	963.5
1973	989.6
1974	1025
1975	1056
1976	1061
1977	1087
1978	1097
1979	1091
1980	1099
1981	1024
1982	1051
1983	1016
1984	1044
1985	1285
1986	1387
1987	1429
1988	1490
1989	1460
1990	1302
1991	1233
1992	1258
1993	1184
1994	1092
1995	1056
1996	1114
1997	1197
1998	1232
1999	1352
2000	1603