Year	Cubic Meters
1990	12608000
1991	12961000
1992	12440000
1993	8840000
1994	11925000
1995	12178000
1996	12250000
1997	13529000
1998	11649000
1999	12703500
2000	13148200
2001	12424000
2002	15154000
2003	15440000
2004	15809000
2005	14501000
2006	13970000
2007	15341000
2008	13667000
2009	12556500
2010	13111600
2011	14358600