Year	Cubic Meters
1990	47236500
1991	49756900
1992	52936200
1993	57010500
1994	60055000
1995	62127500
1996	63688400
1997	64877800
1998	66049700
1999	67152700
2000	68466800
2001	69712700
2002	71024300
2003	72383300
2004	73887400
2005	75274400
2006	76498000
2007	77800800
2008	78907300
2009	80038100
2010	81194000
2011	81184000