Year	Cubic Meters
1990	1500000
1991	996000
1992	957000
1993	958000
1994	873000
1995	737000
1996	737000
1997	737000
1998	737000
1999	737000
2000	644000
2001	717000
2002	744000
2003	756000
2004	769000
2005	765000
2006	796100
2007	800000
2008	804100
2009	808200
2010	812300
2011	812300