Year	Tonnes
1870	22.002
1871	36.67
1872	520.714
1873	726.066
1874	531.715
1875	1169.773
1876	1147.771
1877	671.061
1878	641.725
1879	707.731
1880	880.08
1881	891.081
1882	1085.432
1883	1140.437
1884	1202.776
1885	1114.768
1886	1232.112
1887	1268.782
1888	1367.791
1889	1573.143
1890	1679.486
1891	1741.825
1892	1694.154
1893	1514.471
1894	1778.495
1895	1697.821
1896	1730.824
1897	1818.832
1898	2082.856
1899	2145.195
1900	2467.891
1901	2390.884
1902	2621.905
1903	2522.896
1904	2581.568
1905	2522.896
1906	2900.597
1907	3164.621
1908	3146.286
1909	3197.624
1910	3252.629
1911	3146.286
1912	3655.999
1913	3861.351
1914	3377.307
1915	3087.614
1916	2992.272
1917	1657.484
1918	1096.433
1919	2159.863
1920	2104.858
1921	2148.862
1922	2962.936
1923	2680.577
1924	3032.609
1925	3124.284
1926	3138.952
1927	3633.997
1928	3997.03
1929	3971.361
1930	4327.06
1931	3923.69
1932	3391.975
1933	4000.697
1934	4099.706
1935	4382.065
1936	4132.709
1937	4935.782
1938	4121.708
1939	4756.099
1940	3901.688
1941	3784.344
1942	3028.942
1943	2944.601
1944	3248.962
1945	3340.637
1946	3894.354
1947	5548.171
1948	5258.478
1949	5526.169
1950	5625.178
1951	5401.491
1952	5357.487
1953	5936.873
1954	5797.527
1955	6468.588
1956	7172.652
1957	7792.375
1958	7565.021
1959	7990.393
1960	8225.081
1961	9090.493
1962	9303.179
1963	10025.578
1964	11023.002
1965	11598.721
1966	11851.744
1967	12409.128
1968	13010.516
1969	14612.995
1970	15258.387
1971	16406.158
1972	18349.668
1973	20003.485
1974	20714.883
1975	21356.608
1976	22423.705
1977	22728.066
1978	22742.734
1979	25030.942
1980	26985.453
1981	27227.475
1982	29255.326
1983	30179.41
1984	29064.642
1985	27407.158
1986	30520.441
1987	31536.2
1988	32925.993
1989	41209.746
1990	42320.847
1991	43992.999
1992	48279.722
1993	46926.599
1994	47659.999
1995	51869.715
1996	50586.265
1997	53072.491
1998	57817.589
1999	64425.523
2000	62731.369
2001	62757.038
2002	66790.738
2003	61216.898
2004	63145.74
2005	65279.934
2006	59816.104
2007	60149.801
2008	55624.723
2009	54176.258
2010	48136.709
2011	47623.329
2012	46013.516
2013	45426.796
2014	45052.762