Year	Cubic Meters
1990	6351000
1991	2446000
1992	2893000
1993	3464000
1994	3808000
1995	3504000
1996	3402000
1997	3451000
1998	3075000
1999	3133000
2000	2531000
2001	3332000
2002	4668000
2003	4615000
2004	4221000
2005	3951000
2006	3783000
2007	3845000
2008	3731000
2009	3588000
2010	3996000
2011	3676000