Year	Tonnes
1992	99009
1993	198018
1994	300694
1995	407037
1996	513380
1997	623390
1998	740734
1999	850744
2000	975422
2001	1144104
2002	1287117
2003	1430130
2004	1573143
2005	1694154
2006	1815165
2007	1954511
2008	2071855
2009	2233203
2010	2346880
2011	2467891
2012	2603570
2013	2746583
2014	2896930