Year	US Dollars adjusted for inflation)
1960	191.79118
1961	140.9135
1962	131.96337
1963	142.02196
1964	163.99133
1965	187.27463
1966	201.52324
1967	185.07593
1968	172.91375
1969	196.74013
1970	228.3177
1971	237.81384
1972	240.88189
1973	253.71437
1974	254.26748
1975	271.59948
1976	263.23062
1977	279.32455
1978	307.76619
1979	326.76837
1980	347.88741
1981	361.22471
1982	387.74558
1983	423.5935
1984	481.3646
1985	538.69083
1986	578.18404
1987	635.4946
1988	695.59905
1989	713.68953
1990	730.77249
1991	787.86744
1992	888.911
1993	1000.61181
1994	1118.49958
1995	1227.55641
1996	1335.36268
1997	1443.77474
1998	1542.06413
1999	1645.988
2000	1771.74151
2001	1905.61078
2002	2065.71858
2003	2258.91211
2004	2472.58656
2005	2738.20546
2006	3069.30478
2007	3487.84577
2008	3805.026
2009	4142.03829
2010	4560.51259
2011	4971.54493
2012	5336.06014
2013	5721.69382
2014	6108.23877
2015	6496.62401
2016	6894.46452
2017	7329.0893