Year	US Dollars adjusted for inflation)
1960	3389.55583
1961	3544.81328
1962	3693.55871
1963	3960.96806
1964	3718.64583
1965	3905.10194
1966	4223.34417
1967	4638.5302
1968	5180.10383
1969	5803.08704
1970	6506.93815
1971	7160.51222
1972	7979.90348
1973	8703.72795
1974	9113.74063
1975	9395.58584
1976	9959.17845
1977	10557.42266
1978	11338.26276
1979	12250.64538
1980	13308.99118
1981	14039.44169
1982	14400.36802
1983	15428.54483
1984	16472.02301
1985	16336.51513
1986	16569.05306
1987	18077.45722
1988	19583.45701
1989	20953.41827
1990	22178.48939
1991	22997.78453
1992	23898.8977
1993	25990.31403
1994	27939.63486
1995	29008.49955
1996	29951.0196
1997	31363.40899
1998	29641.22583
1999	31197.60512
2000	33390.05848
2001	32191.94009
2002	33242.98633
2003	35233.13448
2004	38117.41053
2005	40020.26016
2006	42223.89136
2007	44191.23809
2008	42650.10208
2009	41133.29981
2010	46569.67951
2011	48505.26439
2012	49262.33358
2013	50948.44618
2014	52244.44041
2015	52785.30643
2016	53353.83946
2017	55235.51289