Year	Cubic Meters
1990	15732545
1991	11492028
1992	12249230
1993	12255894
1994	14359636
1995	13805755
1996	15010236
1997	14725794
1998	14033478
1999	14083908
2000	13276255
2001	13466525
2002	14845440
2003	17055236
2004	16483387
2005	16470661
2006	19134863
2007	21317341
2008	21795428
2009	16727438
2010	17830955
2011	18695671