Year	Cubic Meters
1990	14101000
1991	14403400
1992	14747200
1993	15080100
1994	15355900
1995	15538300
1996	15824400
1997	15973300
1998	16123700
1999	16292200
2000	16449900
2001	16600000
2002	16751700
2003	16905100
2004	17060000
2005	17216600
2006	17326900
2007	17438300
2008	17551000
2009	17664600
2010	17779400
2011	17779400