Year	Tonnes
1802	6402.582
1830	6200.897
1831	4466.406
1832	4719.429
1833	4569.082
1834	4411.401
1835	4763.433
1836	5603.176
1837	6002.879
1838	6127.557
1839	6714.277
1840	7733.703
1841	7396.339
1842	7686.032
1843	7117.647
1844	7807.043
1845	8225.081
1846	8973.149
1847	9325.181
1848	8291.087
1849	8742.128
1850	9339.849
1851	10175.925
1852	11419.038
1853	11796.739
1854	13069.188
1855	13388.217
1856	13223.202
1857	13765.918
1858	14462.648
1859	14910.022
1860	15225.384
1861	16472.164
1862	16358.487
1863	17242.234
1864	18096.645
1865	19075.734
1866	20546.201
1867	22251.356
1868	20117.162
1869	21668.303
1870	24766.918
1871	23736.491
1872	25610.328
1873	28129.557
1874	25936.691
1875	26952.45
1876	26340.061
1877	25071.279
1878	27260.478
1879	27755.523
1880	30450.768
1881	30656.12
1882	32463.951
1883	34411.128
1884	33897.748
1885	33109.343
1886	32130.254
1887	33996.757
1888	36083.28
1889	36864.351
1890	39856.623
1891	37810.437
1892	37759.099
1893	36105.282
1894	39863.957
1895	40164.651
1896	42313.513
1897	43780.313
1898	45122.435
1899	47164.954
1900	49706.185
1901	46746.916
1902	48895.778
1903	52672.788
1904	50391.914
1905	50307.573
1906	57542.564
1907	58371.306
1908	57894.596
1909	57810.255
1910	61337.909
1911	61737.612
1912	64828.893
1913	68070.521
1914	40608.358
1915	34447.798
1916	45830.166
1917	36277.631
1918	33751.068
1919	44906.082
1920	55199.351
1921	50575.264
1922	55954.753
1923	71942.873
1924	76317.604
1925	78103.433
1926	77747.734
1927	90549.231
1928	88330.696
1929	97047.155
1930	93761.523
1931	84201.654
1932	67777.161
1933	72723.944
1934	75026.82
1935	71708.185
1936	75074.491
1937	90384.216
1938	79196.199
1939	73780.04
1940	62155.65
1941	65239.597
1942	61128.89
1943	57901.93
1944	33168.015
1945	38789.526
1946	56464.466
1947	82107.797
1948	85140.406
1949	80850.016
1950	76277.267
1951	89540.806
1952	83548.928
1953	82459.829
1954	85822.468
1955	92111.373
1956	96878.473
1957	96585.113
1958	87773.312
1959	88400.369
1960	91000.272
1961	92793.435
1962	98117.919
1963	105781.949
1964	103662.423
1965	105440.918
1966	105206.23
1967	107472.436
1968	118557.777
1969	123618.237
1970	125620.419
1971	121528.047
1972	130834.893
1973	138872.957
1974	135220.625
1975	122100.099
1976	130009.818
1977	126570.172
1978	135855.016
1979	140233.414
1980	135301.299
1981	124021.607
1982	117553.019
1983	101630.905
1984	105422.583
1985	104472.83
1986	102874.018
1987	103116.04
1988	100354.789
1989	107461.435
1990	106049.64
1991	110959.753
1992	111968.178
1993	107652.119
1994	112334.878
1995	112327.544
1996	118059.065
1997	115341.818
1998	118374.427
1999	114260.053
2000	115118.131
2001	114527.744
2002	107311.088
2003	112914.264
2004	111102.766
2005	108510.197
2006	107072.733
2007	103545.079
2008	104443.494
2009	99863.411
2010	110824.074
2011	99944.085
2012	95107.312
2013	96970.148
2014	93350.819