Year	Cubic Meters
1992	40000
1993	40000
1994	40000
1995	40000
1996	40000
1997	4000000
1998	4130000
1999	4130000
2000	4282000
2001	3818000
2002	4224000
2003	4097900
2004	3993000
2005	3806000
2006	4105000
2007	3752000
2008	4011000
2009	3428500
2010	3615000
2011	3851000