Year	Kilotonnes
1850	0
1851	0.00053
1852	0.00107
1853	0.0016
1854	0.00213
1855	0.00267
1856	0.0032
1857	0.00374
1858	0.00427
1859	0.00481
1860	0.00534
1861	0.00588
1862	0.00642
1863	0.00696
1864	0.00749
1865	0.00803
1866	0.00857
1867	0.00911
1868	0.00965
1869	0.01019
1870	0.01073
1871	0.01127
1872	0.01181
1873	0.01235
1874	0.01289
1875	0.01344
1876	0.01398
1877	0.01452
1878	0.01506
1879	0.01561
1880	0.01615
1881	0.0249
1882	0.03365
1883	0.0424
1884	0.05117
1885	0.05994
1886	0.06872
1887	0.07751
1888	0.08631
1889	0.09512
1890	0.1039
1891	0.1088
1892	0.1124
1893	0.1147
1894	0.1154
1895	0.1143
1896	0.1631
1897	0.2115
1898	0.2595
1899	0.3118
1900	0.3623
1901	0.4346
1902	0.6774
1903	0.9547
1904	1.631
1905	1.486
1906	1.723
1907	2.05
1908	2.287
1909	2.434
1910	2.516
1911	2.692
1912	3.384
1913	3.854
1914	3.023
1915	2.258
1916	3.769
1917	3.527
1918	3.185
1919	2.423
1920	2.909
1921	2.862
1922	3.429
1923	3.908
1924	4.122
1925	4.103
1926	5.271
1927	5.137
1928	5.129
1929	5.001
1930	4.68
1931	4.67
1932	7.489
1933	10.18
1934	7.731
1935	9.404
1936	12.9
1937	14.73
1938	18.55
1939	18.38
1940	14.37
1941	14.27
1942	11.97
1943	9.447
1944	12.45
1945	13.29
1946	15.28
1947	18.04
1948	19.46
1949	21.55
1950	34.56
1951	39.82
1952	38.92
1953	38.25
1954	37.17
1955	57.94
1956	60.74
1957	57.53
1958	41.88
1959	37.98
1960	34.97
1961	32.29
1962	34.3
1963	40.57
1964	48.9
1965	50.96
1966	53.93
1967	58.06
1968	58.42
1969	55.51
1970	59.33
1971	59.02
1972	59.17
1973	67.14
1974	73.02
1975	61.13
1976	62.08
1977	52.17
1978	52.16
1979	53.91
1980	65.4
1981	47.21
1982	13.12
1983	11.76
1984	18
1985	13.93
1986	25
1987	29.27
1988	28.83
1989	28.22
1990	28.11
1991	37.22
1992	37.43
1993	39.38
1994	41.5
1995	43.75
1996	46.03
1997	47.97
1998	49.18
1999	52.32
2000	55.23