Year	Cubic Meters
1990	84707000
1991	33618000
1992	32954000
1993	33152000
1994	39813000
1995	39343000
1996	37014000
1997	38207000
1998	39052000
1999	37634000
2000	53710000
2001	39483000
2002	42380000
2003	51182000
2004	54504000
2005	56946000
2006	62290000
2007	76728000
2008	55367000
2009	48073300
2010	54418400
2011	56141600