Year	Cubic Meters
1990	9641400
1991	9767350
1992	10046590
1993	10341320
1994	10636190
1995	10819320
1996	10964460
1997	11124820
1998	11282460
1999	7820000
2000	8057043
2001	8306680
2002	8565505
2003	8833913
2004	9112333
2005	9401195
2006	9700963
2007	10018637
2008	10355465
2009	10702456
2010	11058294
2011	11422134