Year	Tonnes
1907	7.334
1908	18.335
1909	55.005
1910	51.338
1911	36.67
1912	3.667
1913	7.334
1914	18.335
1915	55.005
1916	51.338
1917	11.001
1918	29.336
1919	58.672
1920	102.676
1921	69.673
1922	77.007
1923	77.007
1924	84.341
1925	84.341
1926	51.338
1927	40.337
1928	80.674
1929	69.673
1930	88.008
1931	80.674
1932	88.008
1933	77.007
1934	88.008
1935	99.009
1936	121.011
1937	121.011
1938	157.681
1939	84.341
1940	113.677
1941	91.675
1945	14.668
1946	113.677
1947	198.018
1948	216.353
1949	319.029
1950	3608.328
1951	3556.99
1952	4055.702
1953	4037.367
1954	5335.485
1955	6622.602
1956	6259.569
1957	6736.279
1958	7568.688
1959	7234.991
1960	8335.091
1961	8723.793
1962	10348.274
1963	11485.044
1964	12838.167
1965	13982.271
1966	16123.799
1967	18232.324
1968	22251.356
1969	22860.078
1970	24781.586
1971	27586.841
1972	26442.737
1973	31543.534
1974	30531.442
1975	32526.29
1976	35129.86
1977	36754.341
1978	37476.74
1979	38136.8
1980	37000.03
1981	34664.151
1982	34997.848
1983	35415.886
1984	30993.484
1985	28048.883
1986	29207.655
1987	32683.971
1988	37729.763
1989	39141.558
1990	41763.463
1991	43930.66
1992	48752.765
1993	49482.498
1994	54799.648
1995	60710.852
1996	62162.984
1997	71158.135
1998	69240.294
1999	69159.62
2000	73306.997
2001	71051.792
2002	71337.818
2003	71425.826
2004	74066.066
2005	74832.469
2006	67692.82
2007	72170.227
2008	78858.835
2009	77568.051
2010	84869.048
2011	85496.105
2012	91205.624
2013	98128.92
2014	105653.604