Year	Tonnes
1889	3.667
1890	14.668
1891	22.002
1892	179.683
1893	403.37
1894	480.377
1895	770.07
1896	861.745
1897	1107.434
1898	1290.784
1899	1125.769
1900	1210.11
1901	2244.204
1902	1540.14
1903	3003.273
1904	3369.973
1905	4136.376
1906	4455.405
1907	5298.815
1908	5496.833
1909	5991.878
1910	6116.556
1911	6732.612
1912	5845.198
1913	5903.87
1914	6021.214
1915	6035.882
1916	6769.282
1917	7143.316
1918	7135.982
1919	7642.028
1920	8269.085
1921	8764.13
1922	8305.755
1923	9596.539
1924	10593.963
1925	11089.008
1926	11107.343
1927	12896.839
1928	14844.016
1929	18555.02
1930	18100.312
1931	16908.537
1932	16600.509
1933	17876.625
1934	19251.75
1935	20018.153
1936	21785.647
1937	25364.639
1938	26754.432
1939	29225.99
1940	28756.614
1941	26508.743
1942	9464.527
1943	19042.731
1944	8778.798
1945	3810.013
1946	1345.789
1947	4059.369
1948	15507.743
1949	21921.326
1950	9838.561
1951	9398.521
1952	12731.824
1953	13091.19
1954	14759.675
1955	20861.563
1956	21829.651
1957	22431.039
1958	22225.687
1959	23883.171
1960	21404.279
1961	26024.699
1962	22995.757
1963	22783.071
1964	22394.369
1965	24689.911
1966	23395.46
1967	24561.566
1968	27586.841
1969	33391.702
1970	35822.923
1971	38987.544
1972	43340.273
1973	49134.133
1974	51260.993
1975	53963.572
1976	61810.952
1977	82434.16
1978	93933.872
1979	95096.311
1980	94784.616
1981	100160.438
1982	105407.915
1983	104956.874
1984	112184.531
1985	121245.688
1986	121740.733
1987	123372.548
1988	132162.347
1989	130966.905
1990	149565.929
1991	179730.671
1992	202576.081
1993	218600.871
1994	221413.46
1995	224941.114
1996	253290.691
1997	278658.997
1998	214200.471
1999	241988.997
2000	263418.945
2001	294907.474
2002	306737.216
2003	316792.13
2004	337635.358
2005	341991.754
2006	345119.705
2007	375544.804
2008	416560.199
2009	446409.579
2010	428760.308
2011	603665.207
2012	637078.911
2013	490226.562
2014	464176.194