Year	Cubic Meters
1990	11747000
1991	10666000
1992	10112000
1993	10278000
1994	9294000
1995	10119000
1996	8988000
1997	9322000
1998	8950000
1999	9202000
2000	8934000
2001	9174000
2002	8830000
2003	8477000
2004	8960000
2005	9845000
2006	9590000
2007	10478000
2008	10361000
2009	8991000
2010	10891000
2011	10703000