Year	Tonnes
1858	146.68
1859	205.352
1860	304.361
1861	425.372
1862	469.376
1863	469.376
1864	572.052
1865	696.73
1866	689.396
1867	674.728
1868	770.07
1869	744.401
1870	898.415
1871	1111.101
1872	1276.116
1873	1239.446
1874	1169.773
1875	1279.783
1876	1496.136
1877	1419.129
1878	1356.79
1879	1448.465
1880	1672.152
1881	1565.809
1882	1730.824
1883	1914.174
1884	1965.512
1885	2046.186
1886	2086.523
1887	2258.872
1888	2306.543
1889	2544.898
1890	2878.595
1891	3523.987
1892	3472.649
1893	2878.595
1894	3586.326
1895	3850.35
1896	4213.383
1897	4444.404
1898	4752.432
1899	5126.466
1900	5680.183
1901	5188.805
1902	5240.143
1903	5676.516
1904	5966.209
1905	6244.901
1906	6901.294
1907	8005.061
1908	8012.395
1909	8074.734
1910	7796.042
1911	8617.45
1912	8767.797
1913	9259.175
1914	8434.1
1915	8932.812
1916	8489.105
1917	6112.889
1918	5749.856
1919	4609.419
1920	7238.658
1921	4470.073
1922	6156.893
1923	7671.364
1924	7238.658
1925	7543.019
1926	7462.345
1927	8602.782
1928	8973.149
1929	10274.934
1930	9567.203
1931	10106.252
1932	10234.597
1933	9574.537
1934	9563.536
1935	9482.862
1936	9930.236
1937	10472.952
1938	10469.285
1939	11870.079
1940	8320.423
1941	6633.603
1942	5845.198
1943	6178.895
1944	4455.405
1945	1624.481
1946	5771.858
1947	9457.193
1948	10223.596
1949	8540.443
1950	10245.598
1951	12313.786
1952	11239.355
1953	10348.274
1954	12610.813
1955	13633.906
1956	17080.886
1957	17715.277
1958	16303.482
1959	16622.511
1960	19523.108
1961	20388.52
1962	24154.529
1963	29104.979
1964	28166.227
1965	30370.094
1966	31528.866
1967	32562.96
1968	36028.275
1969	38096.463
1970	40296.663
1971	41943.146
1972	42973.573
1973	46262.872
1974	41481.104
1975	39097.554
1976	40483.68
1977	41085.068
1978	42218.171
1979	39911.628
1980	40538.685
1981	38859.199
1982	36629.663
1983	40069.309
1984	39174.561
1985	39827.287
1986	42295.178
1987	40252.659
1988	40711.034
1989	39467.921
1990	42610.54
1991	42705.882
1992	42793.89
1993	40751.371
1994	41323.423
1995	39225.899
1996	39885.959
1997	41466.436
1998	41704.791
1999	40692.699
2000	39049.883
2001	42944.237
2002	40696.366
2003	40175.652
2004	40366.336
2005	41338.091
2006	41851.471
2007	37986.453
2008	40403.006
2009	41646.119
2010	38994.878
2011	36967.027
2012	37773.767
2013	40226.99
2014	35305.876