Year	Tonnes
2001	14.668
2002	25.669
2003	25.669
2004	25.669
2005	29.336
2006	29.336
2007	29.336
2008	22.002
2009	29.336
2010	29.336
2011	25.669
2012	25.669
2013	22.002
2014	22.002