Year	Tonnes
1830	1.43723
1831	1.72467
1832	1.14978
1833	1.43723
1850	8.9108
1855	27.01983
1858	37.94275
1859	40.24231
1860	53.17733
1861	67.54959
1862	60.93835
1863	63.8128
1864	71.57382
1865	68.41192
1866	216.15868
1867	248.06508
1868	206.38555
1869	279.97148
1870	303.82942
1871	410.18409
1872	421.107
1873	395.23695
1874	479.74579
1875	552.18194
1876	685.55645
1877	699.64126
1878	914.36271
1879	938.22065
1880	1100.6271
1881	1159.26589
1882	1221.06658
1883	1389.79683
1884	1411.06776
1885	1536.96869
1886	1576.34866
1887	1668.04364
1888	1739.9049
1889	1879.0283
1890	2127.95572
1891	2342.96462
1892	2480.07591
1893	2906.93181
1894	2960.68403
1895	3401.91219
1896	3463.13798
1897	4004.10957
1898	4490.75404
1899	5209.65412
1900	5901.53436
1901	6058.7668
1902	5851.80636
1903	5724.18076
1904	6368.63257
1905	5684.80079
1906	6484.18548
1907	7262.87412
1908	7307.42811
1909	7713.87541
1910	7564.97887
1911	7843.22568
1912	8884.63911
1913	9651.5425
1914	8710.73485
1915	7995.28412
1916	8521.59601
1917	7842.65079
1918	3127.68961
1919	2671.51431
1920	2436.09681
1921	2641.90747
1922	3221.97159
1923	3559.14463
1924	4240.3894
1925	4185.19995
1926	6063.94081
1927	7539.10882
1928	8375.57392
1929	9020.02572
1930	12262.69335
1931	14731.84635
1932	16597.93962
1933	18549.40408
1934	22437.6733
1935	25398.06989
1936	29123.6452
1937	29780.1697
1938	31431.54152
1939	31817.00534
1940	38144.53326
1941	33511.49392
1942	23062.86628
1943	29440.98454
1944	27572.87915
1945	29192.05712
1946	32807.25354
1947	39505.58558
1948	42038.55138
1949	47787.73986
1950	53268.16722
1951	57731.61398
1952	61822.53196
1953	65405.82197
1954	71434.69449
1955	81001.15326
1956	88810.17298
1957	97186.60923
1958	103735.75729
1959	109065.56344
1960	113554.30537
1961	117104.82665
1962	122906.90502
1963	131809.65316
1964	140179.76563
1965	148704.23608
1966	157039.85514
1967	164208.44729
1968	168821.94037
1969	175817.20315
1970	184926.04939
1971	196276.6796
1972	206546.22896
1973	215309.56626
1974	223551.19078
1975	235028.58425
1976	244095.46352
1977	252417.57266
1978	261099.563
1979	263272.36015
1980	273650.2763
1981	268480.2896
1982	273556.56921
1983	277478.18206
1984	279975.50467
1985	301945.79231
1986	302770.47216
1987	315525.84633
1988	324196.91377
1989	317406.31186
1990	297598.1859
1991	286842.8544
1992	262043.82
1993	217621.782
1994	199983.512
1995	169166.044
1996	141535.199
1997	129459.768
1998	127321.907
1999	116493.256
2000	118099.402
2001	131850.652
2002	133735.49
2003	142209.927
2004	173053.064
2005	177328.786
2006	192631.177
2007	222348.545
2008	232806.829
2009	213338.726
2010	248549.26
2011	259058.882
2012	242971.753
2013	262846.893
2014	248314.572