Year	Tonnes
1843	135.679
1844	157.681
1845	209.019
1846	227.354
1847	172.349
1848	311.695
1849	271.358
1850	341.031
1851	311.695
1852	333.697
1853	359.366
1854	458.375
1855	454.708
1856	649.059
1857	663.727
1858	491.378
1859	627.057
1860	542.716
1861	784.738
1862	678.395
1863	755.402
1864	649.059
1865	1015.759
1866	938.752
1867	916.75
1868	1085.432
1869	946.086
1870	1144.104
1871	1188.108
1872	1140.437
1873	1151.438
1874	1243.113
1875	1459.466
1876	1543.807
1877	1525.472
1878	1448.465
1879	1635.482
1880	1862.836
1881	1972.846
1882	2115.859
1883	2431.221
1884	2420.22
1885	2537.564
1886	2431.221
1887	2493.56
1888	2805.255
1889	2995.939
1890	2871.261
1891	3087.614
1892	3171.955
1893	2999.606
1894	3402.976
1895	3527.654
1896	4316.059
1897	4627.754
1898	4807.437
1899	5254.811
1900	5152.135
1901	5364.821
1902	5507.834
1903	5731.521
1904	6182.562
1905	6013.88
1906	6549.262
1907	5837.864
1908	7242.325
1909	8012.395
1910	7356.002
1911	7836.379
1912	9292.178
1913	9534.2
1914	9772.555
1915	10461.951
1916	10223.596
1917	7440.343
1918	8683.456
1919	8243.416
1920	7198.321
1921	6798.618
1922	9658.878
1923	10535.291
1924	12350.456
1925	10729.642
1926	10476.619
1927	13336.879
1928	12570.476
1929	15141.043
1930	13820.923
1931	14334.303
1932	13439.555
1933	13384.55
1934	14656.999
1935	15265.721
1936	15793.769
1937	16310.816
1938	14645.998
1939	16318.15
1940	14836.682
1941	17414.583
1942	16486.832
1943	20641.543
1944	20300.512
1945	14055.611
1946	17660.272
1947	21473.952
1948	17088.22
1949	16897.536
1950	22009.334
1951	21943.328
1952	22922.417
1953	23175.44
1954	25602.994
1955	27091.796
1956	26398.733
1957	24924.599
1958	26816.771
1959	26061.369
1960	29779.707
1961	31734.218
1962	36926.69
1963	40707.367
1964	43189.926
1965	44337.697
1966	50127.89
1967	49075.461
1968	53325.514
1969	59401.733
1970	62100.645
1971	57062.187
1972	59643.755
1973	59266.054
1974	55078.34
1975	55778.737
1976	60135.133
1977	61847.622
1978	61117.889
1979	62999.06
1980	60369.821
1981	51789.041
1982	53695.881
1983	50175.561
1984	50861.29
1985	60072.794
1986	58903.021
1987	58341.97
1988	55107.676
1989	48785.768
1990	50230.566
1991	60270.812
1992	54322.938
1993	57065.854
1994	61000.545
1995	57172.197
1996	72181.228
1997	61557.929
1998	59552.08
1999	55148.013
2000	51330.666
2001	52918.477
2002	52049.398
2003	55998.757
2004	50600.933
2005	47095.281
2006	54986.665
2007	50256.235
2008	46933.933
2009	44510.046
2010	46640.573
2011	40645.028
2012	36427.978
2013	38532.836
2014	33498.045