Year	Tonnes
1895	524.381
1896	535.382
1897	638.058
1898	740.734
1899	634.391
1900	850.744
1901	1569.476
1902	1961.845
1903	2163.53
1904	1969.179
1905	2079.189
1906	2442.222
1907	2181.865
1908	2460.557
1909	2354.214
1910	2812.589
1911	3109.616
1912	3465.315
1913	3358.972
1914	2845.592
1915	3069.279
1916	3711.004
1917	4030.033
1918	3971.361
1919	3887.02
1920	2783.253
1921	3336.97
1922	2757.584
1923	3047.277
1924	4030.033
1925	3802.679
1926	3905.355
1927	3879.686
1928	3659.666
1929	4019.032
1930	3854.017
1931	2929.933
1932	2896.93
1933	4096.039
1934	4833.106
1935	5115.465
1936	5031.124
1937	5284.147
1938	5533.503
1939	5012.789
1940	5265.812
1941	5573.84
1942	5812.195
1943	6116.556
1944	6145.892
1945	5647.18
1946	5438.161
1947	5713.186
1948	6215.565
1949	5881.868
1950	8459.769
1951	9992.575
1952	10615.965
1953	10414.28
1954	11092.675
1955	11609.722
1956	11844.41
1957	11738.067
1958	12464.133
1959	12717.156
1960	13490.893
1961	14473.649
1962	16725.187
1963	17355.911
1964	17524.593
1965	17766.615
1966	18793.375
1967	19259.084
1968	21224.596
1969	22555.717
1970	24664.242
1971	27095.463
1972	28191.896
1973	27652.847
1974	25955.026
1975	23014.092
1976	24103.191
1977	23109.434
1978	22948.086
1979	24862.26
1980	25265.63
1981	24554.232
1982	20615.874
1983	20839.561
1984	22200.018
1985	21503.288
1986	22247.689
1987	22673.061
1988	26926.781
1989	32386.944
1990	33314.695
1991	31323.514
1992	32474.952
1993	34627.481
1994	38103.797
1995	41745.128
1996	48499.742
1997	56394.793
1998	57641.573
1999	61502.924
2000	58815.013
2001	53340.182
2002	55162.681
2003	55602.721
2004	59775.767
2005	61818.286
2006	64814.225
2007	71638.512
2008	71851.198
2009	66805.406
2010	72250.901
2011	79243.87
2012	80974.694
2013	83226.232
2014	82562.505