Year	US Dollars adjusted for inflation)
1992	378.19543
1993	431.78546
1994	525.72422
1995	539.92615
1996	584.9537
1997	622.23665
1998	620.91748
1999	606.32551
2000	571.60323
2001	603.1051
2002	601.03425
2003	565.72505
2004	556.03564
2005	554.4882
2006	535.92967
2007	532.23148
2008	471.16662
2009	480.60893
2010	482.14909
2011	514.1796