Year	Cubic Meters
1990	4533920
1991	4484500
1992	4601030
1993	4616910
1994	5092860
1995	5151030
1996	5177960
1997	5175330
1998	4601290
1999	4377650
2000	4473320
2001	4669230
2002	4452400
2003	4413780
2004	4519330
2005	4703010
2006	4799700
2007	4995500
2008	4873300
2009	4681190
2010	4703040
2011	4703040