Year	Tonnes
1992	1916852.83197
1993	3586019.82052
1994	5209772.57121
1995	6924973.78723
1996	8932655.09494
1997	11089753.89517
1998	13360775.78359
1999	14926869.50189
2000	16666715.30433
2001	18535828.93744
2002	20534055.40382
2003	22671004.5422
2004	25006505.34855
2005	27217233.2488
2006	29600783.2488
2007	31852321.2488
2008	34602571.2488
2009	36428737.2488
2010	39010305.2488
2011	41580872.2488
2012	43916751.2488
2013	46164622.2488
2014	48375823.2488