Year	Cubic Meters
1990	40
1991	40
1992	40
1993	40
1994	40
1995	40
1996	40
1997	40
1998	40
1999	40
2000	40
2001	40
2002	40
2003	40
2004	40
2005	40
2006	40
2007	40
2008	50
2009	50
2010	50
2011	50