Year	Tonnes
1829	11.001
1830	7.334
1831	3.667
1835	14.668
1836	18.335
1837	25.669
1838	51.338
1839	40.337
1840	44.004
1841	58.672
1842	73.34
1843	62.339
1844	66.006
1845	99.009
1846	99.009
1847	102.676
1848	132.012
1849	106.343
1850	139.346
1851	150.347
1852	150.347
1853	165.015
1854	234.688
1855	256.69
1856	304.361
1857	304.361
1858	267.691
1859	326.363
1860	333.697
1861	429.039
1862	370.367
1863	363.033
1864	480.377
1865	473.043
1866	520.714
1867	619.723
1868	634.391
1869	553.717
1870	630.724
1871	612.389
1872	656.393
1873	660.06
1874	817.741
1875	1026.76
1876	905.749
1877	1221.111
1878	1089.099
1879	1144.104
1880	1250.447
1881	1294.451
1882	1415.462
1883	1525.472
1884	1562.142
1885	1785.829
1886	1745.492
1887	1683.153
1888	1947.177
1889	2222.202
1890	2079.189
1891	2416.553
1892	2467.891
1893	2464.224
1894	2907.931
1895	3061.945
1896	3127.951
1897	3388.308
1898	3388.308
1899	4052.035
1900	4158.378
1901	3898.021
1902	4246.386
1903	4242.719
1904	4162.045
1905	4151.044
1906	4228.051
1907	4785.435
1908	5720.52
1909	5768.191
1910	5944.207
1911	6083.553
1912	6882.959
1913	6923.296
1914	7715.368
1915	8456.102
1916	7902.385
1917	3498.318
1918	4455.405
1919	5295.148
1920	5306.149
1921	3377.307
1922	6486.923
1923	6798.618
1924	7733.703
1925	7601.691
1926	6365.912
1927	8540.443
1928	8459.769
1929	9526.866
1930	8734.794
1931	8093.069
1932	8650.453
1933	9185.835
1934	9493.863
1935	9790.89
1936	10450.95
1937	11771.07
1938	10487.62
1939	12526.472
1940	6516.259
1941	4818.438
1942	4631.421
1943	5449.162
1944	4884.444
1945	4015.365
1946	7080.977
1947	10637.967
1948	10993.666
1949	10417.947
1950	8441.434
1951	9486.529
1952	9695.548
1953	9794.557
1954	9893.566
1955	11426.372
1956	11965.421
1957	11371.367
1958	11199.018
1959	11822.408
1960	13102.191
1961	13351.547
1962	14077.613
1963	14983.362
1964	16189.805
1965	16409.825
1966	19563.445
1967	19328.757
1968	21140.255
1969	22222.02
1970	28012.213
1971	27198.139
1972	29427.675
1973	30524.108
1974	27696.851
1975	29673.364
1976	29317.665
1977	31070.491
1978	34792.496
1979	34242.446
1980	38052.459
1981	40329.666
1982	41052.065
1983	37498.742
1984	40458.011
1985	40714.701
1986	47076.946
1987	40707.367
1988	42482.195
1989	49379.822
1990	31510.531
1991	32075.249
1992	32009.243
1993	35148.195
1994	33905.082
1995	33439.373
1996	33366.033
1997	36101.615
1998	37777.434
1999	40681.698
2000	39673.273
2001	41910.143
2002	38023.123
2003	45221.444
2004	42647.21
2005	42438.191
2006	44257.023
2007	45089.432
2008	55690.729
2009	55346.031
2010	60105.797
2011	45195.775
2012	49889.535
2013	58162.287
2014	47626.996