Year	US Dollars adjusted for inflation)
1965	2370.29415
1966	2468.59171
1967	2531.04491
1968	2542.31028
1969	2560.98877
1970	2568.30611
1971	2598.98312
1972	2688.87259
1973	2750.93475
1974	2829.53681
1975	2846.38744
1976	2925.11846
1977	3058.31284
1978	3157.25978
1979	2968.95701
1980	2574.07369
1981	2268.0917
1982	2093.4327
1983	2095.77272
1984	2095.10411
1985	2080.05394
1986	2056.80683
1987	2081.48279
1988	2093.50248
1989	2086.37615
1990	2158.44507
1991	2161.22295
1992	2281.34487
1993	2381.61274
1994	2461.40456
1995	2547.55016
1996	2540.84478
1997	2594.95601
1998	2640.34359
1999	2675.86534
2000	2686.42534
2001	2692.40311
2002	2719.1554
2003	2747.19114
2004	2758.15724
2005	2819.58968
2006	2928.67464
2007	2969.92638
2008	3019.78719
2009	2943.87686
2010	2992.54527
2011	3092.60193
2012	3164.96887
2013	3224.83539
2014	3272.74025
2015	3333.94621
2016	3402.60086
2017	3463.54358