Year	Cubic Meters
1990	3480000
1991	3434000
1992	3734000
1993	3691000
1994	3578000
1995	3611000
1996	3202000
1997	3445000
1998	3518000
1999	2861000
2000	2955000
2001	2998000
2002	2919000
2003	2783000
2004	2832000
2005	2933000
2006	2846000
2007	2841000
2008	2841000
2009	2657000
2010	2632000
2011	2732000