Year	Cubic Meters
1990	14760
1991	15490
1992	16160
1993	17580
1994	18790
1995	20530
1996	21820
1997	22960
1998	23970
1999	25080
2000	26470
2001	27590
2002	28760
2003	29980
2004	31250
2005	32580
2006	33770
2007	35000
2008	36280
2009	37600
2010	38980
2011	40180