Year	Cubic Meters
1990	3185000
1991	3281900
1992	3380900
1993	3671600
1994	3748800
1995	3779200
1996	3839800
1997	3934800
1998	4046200
1999	4167000
2000	4259100
2001	4336500
2002	4416200
2003	4498200
2004	4582700
2005	4669700
2006	4752000
2007	4836600
2008	4923600
2009	5013200
2010	5105200
2011	5196438