Year	US Dollars adjusted for inflation)
1960	2684.23958
1961	2801.07316
1962	2995.22985
1963	3036.24848
1964	3143.44213
1965	3226.72143
1966	3394.98509
1967	3427.95902
1968	3338.78147
1969	3362.11576
1970	3381.86402
1971	3443.35033
1972	3469.88223
1973	3591.92384
1974	3827.05749
1975	3887.57552
1976	3840.45707
1977	3752.74386
1978	3558.36473
1979	3609.02125
1980	3727.84387
1981	3838.96267
1982	3739.37287
1983	3272.13086
1984	3312.24996
1985	3303.48772
1986	3533.28887
1987	3790.60272
1988	3357.50254
1989	2880.89101
1990	2679.93479
1991	2683.29267
1992	2615.50889
1993	2699.56254
1994	2975.98055
1995	3140.77219
1996	3175.53562
1997	3328.59547
1998	3266.57326
1999	3268.51096
2000	3310.77999
2001	3287.28578
2002	3422.23835
2003	3520.27532
2004	3649.37205
2005	3831.36485
2006	4069.7771
2007	4362.94899
2008	4703.07993
2009	4695.67517
2010	5022.49319
2011	5270.94875
2012	5520.55917
2013	5765.88714
2014	5825.19849
2015	5937.28535
2016	6094.73825
2017	6172.69359