Year	US Dollars adjusted for inflation)
1960	538.43177
1961	481.36724
1962	510.55621
1963	537.95292
1964	546.75419
1965	539.86814
1966	599.34353
1967	599.23563
1968	625.64429
1969	652.72629
1970	601.05825
1971	708.8229
1972	800.67059
1973	817.65746
1974	820.27903
1975	797.5093
1976	784.99812
1977	827.77183
1978	852.44453
1979	883.39832
1980	898.04425
1981	897.04696
1982	876.45238
1983	854.82328
1984	837.75217
1985	842.05544
1986	870.28052
1987	889.61559
1988	912.30991
1989	922.96219
1990	930.03364
1991	913.09114
1992	877.33153
1993	853.41779
1994	849.67856
1995	861.23114
1996	871.41179
1997	851.16583
1998	855.08183
1999	851.05002
2000	833.01245
2001	841.20302
2002	823.07479
2003	824.45297
2004	843.2118
2005	868.90471
2006	900.08181
2007	935.63701
2008	912.3577
2009	917.02472
2010	967.35045
2011	998.97757
2012	1016.8066
2013	1048.23681
2014	1075.6594
2015	1107.99302
2016	1143.3644
2017	1169.34365