Year	Cubic Meters
1990	509319000
1991	491260000
1992	483803000
1993	470726000
1994	473107000
1995	469830000
1996	461077000
1997	464231000
1998	469750000
1999	469313000
2000	466549000
2001	449114000
2002	448000000
2003	448513000
2004	461739000
2005	467347000
2006	457048000
2007	425129000
2008	380509000
2009	332528000
2010	323986000
2011	324433000