Year	Cubic Meters
1990	6350000
1991	6372000
1992	6408000
1993	6711000
1994	7921000
1995	8147000
1996	7495000
1997	7836000
1998	7595000
1999	7775000
2000	7791000
2001	7881000
2002	7789000
2003	8071000
2004	8326000
2005	8516000
2006	8423000
2007	9017000
2008	8416000
2009	8624000
2010	9718000
2011	10020000