Year	Tonnes
1992	45349.789
1993	39489.923
1994	38415.492
1995	40579.022
1996	47498.651
1997	51033.639
1998	53728.884
1999	37051.368
2000	41162.075
2001	44220.353
2002	47274.964
2003	50556.929
2004	55254.356
2005	52302.421