Year	Cubic Meters
1990	1680900
1991	1697400
1992	1718700
1993	1700600
1994	1715000
1995	1731200
1996	1745300
1997	1759600
1998	1176400
1999	1195300
2000	1214800
2001	1232800
2002	1251200
2003	1270200
2004	1289600
2005	1309600
2006	1325500
2007	1341800
2008	1358400
2009	1375400
2010	1392700
2011	1392700