Year	Tonnes
1939	14.668
1940	7.334
1941	3.667
1942	11.001
1943	14.668
1944	18.335
1994	865.412
1995	935.085
1996	1012.092
1997	865.412
1998	590.387
1999	619.723
2000	608.722
2001	630.724
2002	605.055
2003	726.066
2004	770.07
2005	766.403
2006	561.051
2007	579.386
2008	414.371
2009	513.38
2010	513.38
2011	594.054
2012	660.06
2013	667.394
2014	696.73