Year	Cubic Meters
1990	2085000
1991	1779400
1992	1993500
1993	2326400
1994	2618700
1995	2794700
1996	2909800
1997	3280300
1998	3282100
1999	2849200
2000	3099400
2001	3101700
2002	2208200
2003	4632000
2004	4570000
2005	4270000
2006	4570000
2007	4470000
2008	4470000
2009	4470000
2010	4470000
2011	4470000