Year	Cubic Meters
1990	11205000
1991	10809000
1992	10278000
1993	10207000
1994	9819000
1995	9350000
1996	8978000
1997	8978000
1998	8548000
1999	8978000
2000	10831000
2001	8946000
2002	8742000
2003	9673000
2004	10869000
2005	10746200
2006	10804600
2007	10822900
2008	10168700
2009	9564100
2010	9648400
2011	9139800