Year	Kilotonnes
1850	0.59
1851	0.7484
1852	1.494
1853	2.221
1854	2.932
1855	3.67
1856	4.518
1857	5.349
1858	11.96
1859	13.73
1860	15.68
1861	16.85
1862	19.65
1863	21.21
1864	20.98
1865	31.77
1866	29.69
1867	27.77
1868	28.3
1869	26.73
1870	33.36
1871	35.64
1872	38.91
1873	39.36
1874	41.59
1875	44.96
1876	46
1877	48.84
1878	48.74
1879	52.06
1880	60.13
1881	65.73
1882	77.82
1883	88.76
1884	103.1
1885	100.6
1886	107.3
1887	122
1888	160.7
1889	138.8
1890	151.6
1891	175.7
1892	172.2
1893	187.3
1894	181.1
1895	179
1896	192.1
1897	203.5
1898	219.8
1899	256.1
1900	287.2
1901	347.2
1902	361
1903	397.4
1904	457.8
1905	507.8
1906	541.6
1907	565.7
1908	670.4
1909	649.3
1910	721.8
1911	818.4
1912	934.8
1913	1093
1914	957.7
1915	950.2
1916	1187
1917	1322
1918	1408
1919	1132
1920	1199
1921	1021
1922	858.2
1923	1283
1924	1121
1925	1107
1926	1066
1927	1280
1928	1394
1929	1589
1930	1622
1931	1324
1932	1173
1933	1301
1934	1571
1935	1586
1936	1688
1937	1966
1938	1898
1939	2101
1940	2252
1941	2479
1942	2569
1943	2629
1944	2593
1945	2356
1946	2286
1947	2542
1948	2655
1949	2417
1950	2515
1951	2714
1952	2609
1953	2522
1954	2569
1955	2684
1956	2954
1957	2792
1958	2404
1959	2559
1960	2650
1961	2593
1962	2587
1963	2621
1964	2752
1965	2908
1966	2829
1967	3142
1968	3201
1969	2987
1970	3270
1971	3132
1972	2926
1973	2909
1974	2800
1975	2730
1976	2590
1977	2450
1978	2135
1979	2240
1980	2322
1981	2146
1982	1806
1983	1812
1984	1978
1985	1886
1986	1664
1987	1844
1988	1886
1989	1656
1990	1630
1991	1811
1992	1568
1993	1295
1994	1257
1995	1313
1996	1263
1997	1262
1998	1268
1999	1250
2000	1190