Year	Cubic Meters
1990	7119100
1991	7322900
1992	7521400
1993	7731300
1994	8109600
1995	8207300
1996	8176600
1997	8238400
1998	8377900
1999	8523800
2000	8384900
2001	8230700
2002	8523200
2003	8815400
2004	9169400
2005	9441100
2006	9898000
2007	10029900
2008	10164900
2009	10303000
2010	10444400
2011	10444400