Year	Cubic Meters
1990	5980500
1991	6177000
1992	6513500
1993	6750900
1994	6959700
1995	7184700
1996	7413200
1997	7645400
1998	7821200
1999	8022300
2000	8384400
2001	3436000
2002	3436000
2003	3436000
2004	3436000
2005	3558000
2006	3558000
2007	3558000
2008	3558000
2009	3558000
2010	3558000
2011	3558000