Year	US Dollars adjusted for inflation)
1960	304.23189
1961	309.35356
1962	312.05233
1963	324.0562
1964	341.09602
1965	325.28739
1966	318.41568
1967	336.23646
1968	340.36169
1969	354.89403
1970	365.05738
1971	362.76773
1972	352.55006
1973	355.78821
1974	351.70807
1975	375.08337
1976	372.64261
1977	390.63668
1978	403.63354
1979	373.83225
1980	389.92628
1981	403.87804
1982	408.32488
1983	428.06917
1984	434.3665
1985	446.99977
1986	458.08667
1987	465.98273
1988	500.01328
1989	518.69872
1990	536.16279
1991	530.89474
1992	548.89578
1993	563.74969
1994	589.70879
1995	622.30368
1996	656.69714
1997	670.61012
1998	699.06885
1999	747.25204
2000	762.31334
2001	785.34463
2002	801.50793
2003	850.29326
2004	902.90579
2005	971.22976
2006	1044.89394
2007	1130.09007
2008	1156.93253
2009	1237.33979
2010	1345.77015
2011	1416.40339
2012	1474.96767
2013	1550.14223
2014	1645.32614
2015	1758.83778
2016	1862.43044
2017	1963.54632