Year	US Dollars adjusted for inflation)
1960	5039.08757
1961	5634.32949
1962	5692.39473
1963	5926.93352
1964	6303.57932
1965	6283.71952
1966	6485.42857
1967	6574.96676
1968	6876.57524
1969	7016.29518
1970	7201.68056
1971	7197.67802
1972	7516.46866
1973	7533.26328
1974	7706.67925
1975	7708.95797
1976	8089.41923
1977	8707.58814
1978	9449.32368
1979	9651.31491
1980	9406.77021
1981	9649.97413
1982	9856.16462
1983	8699.41834
1984	8078.38086
1985	7644.68242
1986	7311.85068
1987	6912.95954
1988	6588.96144
1989	6487.45914
1990	6540.71427
1991	6672.41577
1992	6522.31003
1993	6391.76696
1994	6588.3958
1995	6869.49812
1996	7339.93225
1997	7877.61857
1998	8505.0654
1999	9171.36043
2000	9779.49634
2001	10151.96096
2002	10910.89782
2003	12426.14911
2004	13346.59238
2005	14105.34131
2006	15892.28724
2007	16570.06904
2008	17052.25938
2009	16226.51311
2010	16683.94578
2011	16551.48645
2012	16680.68044
2013	16761.08637
2014	16641.73767
2015	16824.67264
2016	15765.96432
2017	15350.85058