Year	Cubic Meters
1992	11396000
1993	10031000
1994	10015000
1995	10015000
1996	15707000
1997	17585000
1998	5902000
1999	6561100
2000	6135800
2001	6485000
2002	6947000
2003	7542300
2004	8622000
2005	8696000
2006	8756100
2007	8756100
2008	8756100
2009	8811800
2010	10364200
2011	10364200