Year	US Dollars adjusted for inflation)
1965	1785.34249
1966	1898.05095
1967	1996.99463
1968	2067.15195
1969	2145.75223
1970	2381.25035
1971	2414.82701
1972	2458.35342
1973	2594.76933
1974	2798.91413
1975	2983.40118
1976	3142.5733
1977	3336.48245
1978	3563.48866
1979	3798.06157
1980	3938.53276
1981	4112.12084
1982	4159.06363
1983	4300.02486
1984	4494.83905
1985	4675.78666
1986	4255.56226
1987	4274.68354
1988	4467.7103
1989	4135.3731
1990	3524.77875
1991	2761.55506
1992	1509.87727
1993	1059.31042
1994	958.80622
1995	1010.25068
1996	1152.09156
1997	1297.02319
1998	1350.49669
1999	1400.10402
2000	1436.8795
2001	1516.87988
2002	1610.70725
2003	1812.11176
2004	1943.5587
2005	2158.09453
2006	2391.41465
2007	2722.15153
2008	2821.08074
2009	2753.63927
2010	2964.47703
2011	3220.39135
2012	3469.6717
2013	3633.74088
2014	3851.72342
2015	3973.21935
2016	4083.99816
2017	4290.16785