Year	US Dollars adjusted for inflation)
1996	757.0576
1997	763.50153
1998	766.31738
1999	773.42128
2000	766.93672
2001	746.41
2002	732.55223
2003	723.60169
2004	687.19141
2005	688.70299
2006	693.263
2007	705.38834
2008	700.48333
2009	711.24624
2010	662.27952
2011	688.84339
2012	698.78777
2013	718.42047
2014	728.78032
2015	728.06322
2016	729.36046
2017	728.9204