Year	Cubic Meters
1990	10448600
1991	10496900
1992	9747400
1993	9627300
1994	9511600
1995	9500300
1996	9536400
1997	9569600
1998	10123500
1999	10590000
2000	13057000
2001	12501000
2002	11610000
2003	11992700
2004	10462200
2005	11927100
2006	10469700
2007	10439900
2008	11137000
2009	11216000
2010	11216000
2011	11216000