Year	US Dollars adjusted for inflation)
1960	7359.96779
1961	8155.17454
1962	8884.77481
1963	9652.37431
1964	10064.26481
1965	10578.10915
1966	11229.02619
1967	11573.09776
1968	12176.30756
1969	13130.81842
1970	13542.96371
1971	14002.87285
1972	14977.7799
1973	15966.91633
1974	16680.80807
1975	16590.88241
1976	16958.83044
1977	17261.657
1978	17346.36484
1979	17201.25763
1980	17440.58138
1981	17294.10011
1982	17404.8531
1983	17626.85455
1984	17867.09045
1985	18215.7362
1986	18752.24053
1987	19741.18923
1988	20702.91918
1989	21668.25805
1990	22464.73292
1991	22978.12502
1992	23078.33609
1993	22722.15468
1994	23153.1728
1995	23686.84349
1996	24219.32758
1997	25007.89437
1998	25977.00098
1999	27032.22071
2000	28335.00183
2001	29264.88145
2002	29685.36395
2003	30082.62648
2004	30504.35743
2005	31110.01413
2006	31865.36917
2007	32459.91738
2008	32303.24148
2009	30874.12601
2010	30736.62785
2011	30321.70487
2012	29414.85692
2013	29008.02098
2014	29496.37893
2015	30532.44997
2016	31505.6122
2017	32405.75081