Year	Kilotonnes
1850	0.1348
1851	0.1348
1852	0.2697
1853	0.4046
1854	0.5397
1855	0.6749
1856	0.8101
1857	0.9455
1858	1.081
1859	1.217
1860	1.352
1861	2.688
1862	4.024
1863	5.36
1864	6.696
1865	8.032
1866	9.368
1867	10.7
1868	12.04
1869	13.38
1870	14.71
1871	16.05
1872	17.39
1873	18.73
1874	20.06
1875	21.4
1876	22.74
1877	24.07
1878	25.41
1879	26.75
1880	28.09
1881	31.82
1882	29.56
1883	29.7
1884	29.84
1885	32.86
1886	35.87
1887	38.89
1888	42.05
1889	46.8
1890	49.48
1891	41.43
1892	53.77
1893	46.73
1894	58.37
1895	51.3
1896	57.83
1897	65.3
1898	67.51
1899	67.91
1900	81.09
1901	88.45
1902	44.23
1903	47.69
1904	57.05
1905	61.74
1906	59.15
1907	64.02
1908	72.41
1909	71.36
1910	70
1911	82.12
1912	82.39
1913	78.86
1914	86.37
1915	98.86
1916	98.05
1917	82.54
1918	93.15
1919	96.4
1920	96.76
1921	101.7
1922	98.82
1923	107.2
1924	110.4
1925	104.2
1926	105.1
1927	98.07
1928	103.6
1929	115.2
1930	125.4
1931	138.1
1932	141.1
1933	145
1934	149.1
1935	160
1936	155.5
1937	171.1
1938	172.3
1939	191.2
1940	198.8
1941	213.7
1942	213.1
1943	212.4
1944	223.8
1945	232.3
1946	237.3
1947	250.2
1948	252.1
1949	259.5
1950	239.9
1951	241.1
1952	253.3
1953	258.3
1954	271.4
1955	295.3
1956	309.3
1957	319.3
1958	339.1
1959	334.9
1960	344.9
1961	360.7
1962	376
1963	378.2
1964	408.2
1965	437.8
1966	472.7
1967	494.1
1968	526.2
1969	545
1970	557.2
1971	582.5
1972	590.3
1973	639.4
1974	671.3
1975	695.9
1976	759.3
1977	849.4
1978	874.9
1979	982.1
1980	1073
1981	1206
1982	1229
1983	1288
1984	1443
1985	1527
1986	1533
1987	1549
1988	1547
1989	1516
1990	1520
1991	1554
1992	1411
1993	1529
1994	1559
1995	1620
1996	1594
1997	1645
1998	1555
1999	1571
2000	1543