Year	Tonnes
1834	33.003
1839	44.004
1840	40.337
1841	40.337
1842	80.674
1843	58.672
1844	99.009
1845	88.008
1846	80.674
1847	80.674
1848	139.346
1849	194.351
1850	201.685
1851	216.353
1852	216.353
1853	227.354
1854	337.364
1855	315.362
1856	476.71
1857	612.389
1858	513.38
1859	755.402
1860	751.735
1861	968.088
1862	986.423
1863	986.423
1864	1037.761
1865	1081.765
1866	1114.768
1867	1037.761
1868	1224.778
1869	1089.099
1870	1342.122
1871	1433.797
1872	1712.489
1873	1738.158
1874	1873.837
1875	2277.207
1876	2431.221
1877	2574.234
1878	2181.865
1879	2214.868
1880	2830.924
1881	2753.917
1882	3149.953
1883	3219.626
1884	3553.323
1885	3832.015
1886	3755.008
1887	3806.346
1888	4250.053
1889	4961.451
1890	4950.45
1891	5284.147
1892	5254.811
1893	5284.147
1894	5896.536
1895	5958.875
1896	6160.56
1897	6860.957
1898	7304.664
1899	9141.831
1900	9178.501
1901	8529.442
1902	8932.812
1903	9812.892
1904	10333.606
1905	10172.258
1906	11301.694
1907	12783.162
1908	13655.908
1909	12570.476
1910	12999.515
1911	12662.151
1912	14029.942
1913	15771.767
1914	14858.684
1915	14961.36
1916	15771.767
1917	6769.282
1918	8008.728
1919	7686.032
1920	10410.613
1921	6017.547
1922	9952.238
1923	12108.434
1924	14451.647
1925	12907.84
1926	12544.807
1927	17641.937
1928	16259.478
1929	19387.429
1930	18947.389
1931	18958.39
1932	18753.038
1933	19534.109
1934	21752.644
1935	22885.747
1936	25071.279
1937	28969.3
1938	26160.378
1939	29328.666
1940	18492.681
1941	15056.702
1942	13036.185
1943	15852.441
1944	12456.799
1945	4558.081
1946	17396.248
1947	25118.95
1948	30832.136
1949	26860.775
1950	28686.941
1951	33472.376
1952	34557.808
1953	32584.962
1954	34532.139
1955	39137.891
1956	43420.947
1957	38884.868
1958	42115.495
1959	42434.524
1960	49222.141
1961	48851.774
1962	51326.999
1963	55371.7
1964	60432.16
1965	62628.693
1966	72591.932
1967	69001.939
1968	77685.395
1969	86467.86
1970	92379.064
1971	84590.356
1972	84781.04
1973	87366.275
1974	79889.262
1975	80824.347
1976	88308.694
1977	85804.133
1978	79533.563
1979	84927.72
1980	71759.523
1981	69430.978
1982	62291.329
1983	58297.966
1984	57333.545
1985	62394.005
1986	62038.306
1987	59717.095
1988	57443.555
1989	55533.048
1990	51946.722
1991	51525.017
1992	51026.305
1993	51756.038
1994	54894.99
1995	55155.347
1996	55910.749
1997	52148.407
1998	52977.149
1999	51106.979
2000	49350.486
2001	51125.314
2002	57425.22
2003	54781.313
2004	54520.956
2005	51561.687
2006	49570.506
2007	48059.702
2008	49123.132
2009	43065.248
2010	52023.729
2011	51734.036
2012	47047.61
2013	44847.41
2014	43420.947