Year	Cubic Meters
1990	187600
1991	187600
1992	187600
1993	187600
1994	187600
1995	187600
1996	187600
1997	187600
1998	187600
1999	187600
2000	187600
2001	187600
2002	187600
2003	187600
2004	187600
2005	187600
2006	155000
2007	167000
2008	167000
2009	167000
2010	167000
2011	167000