Year	Tonnes
1896	3.667
1897	51.338
1898	113.677
1899	80.674
1900	110.01
1901	176.016
1902	256.69
1903	216.353
1904	220.02
1905	253.023
1906	275.025
1907	359.366
1908	410.704
1909	487.711
1910	616.056
1911	678.395
1912	740.734
1913	854.411
1914	920.417
1915	1015.759
1916	1386.126
1917	1800.497
1918	2145.195
1919	2911.598
1920	3047.277
1921	2757.584
1922	3575.325
1923	3835.682
1924	3997.03
1925	4492.075
1926	4756.099
1927	4932.115
1928	4206.049
1929	4195.048
1930	4246.386
1931	3777.01
1932	3597.327
1933	4198.715
1934	4176.713
1935	4367.397
1936	4737.764
1937	5254.811
1938	5903.87
1939	7187.32
1940	7774.04
1941	7942.722
1942	6424.584
1943	6431.918
1944	4635.088
1945	2189.199
1946	2863.927
1947	3622.996
1948	4543.413
1949	4477.407
1950	3788.011
1951	4913.78
1952	6398.915
1953	6479.589
1954	6494.257
1955	7205.655
1956	7693.366
1957	8192.078
1958	9581.871
1959	11004.667
1960	11888.414
1961	12544.807
1962	14183.956
1963	15130.042
1964	16930.539
1965	17869.291
1966	19490.105
1967	22002
1968	24176.531
1969	26329.06
1970	28774.949
1971	31521.532
1972	35925.599
1973	40303.997
1974	39368.912
1975	43519.956
1976	56185.774
1977	61227.899
1978	71139.8
1979	75884.898
1980	83651.604
1981	75184.501
1982	75514.531
1983	83281.237
1984	85008.394
1985	84880.049
1986	94491.256
1987	98352.607
1988	113280.964
1989	123328.544
1990	123687.91
1991	134886.928
1992	145451.555
1993	157174.954
1994	164061.58
1995	174347.515
1996	182506.59
1997	196488.861
1998	199873.502
1999	207126.828
2000	219040.911
2001	228157.073
2002	237841.62
2003	246565.413
2004	260617.357
2005	259388.912
2006	267107.947
2007	277914.596
2008	261592.779
2009	248516.257
2010	269997.543
2011	269179.802
2012	258131.131
2013	260437.674
2014	264071.671