Year	US Dollars adjusted for inflation)
1960	12991.26772
1961	13524.44929
1962	14224.48198
1963	14775.05916
1964	15532.63473
1965	16087.92299
1966	16764.23192
1967	17409.96594
1968	18023.81084
1969	19148.50878
1970	20058.68168
1971	20951.65281
1972	21705.16085
1973	22866.72094
1974	23652.76134
1975	23261.12808
1976	24136.13478
1977	24867.50195
1978	25770.57565
1979	26599.37664
1980	26919.19431
1981	27089.36618
1982	27633.2438
1983	27832.13868
1984	28099.07142
1985	28391.82943
1986	28887.97934
1987	29452.1407
1988	30657.64594
1989	31801.87438
1990	32543.94242
1991	32855.99599
1992	33216.009
1993	32869.77897
1994	33515.71351
1995	34091.16745
1996	34442.18439
1997	35122.74628
1998	36237.963
1999	37280.34107
2000	38460.6821
2001	38928.03031
2002	39078.1987
2003	39120.19614
2004	39915.26454
2005	40252.41822
2006	40922.08323
2007	41630.09374
2008	41478.93741
2009	40052.30512
2010	40638.334
2011	41283.1481
2012	41158.88498
2013	41183.51096
2014	41374.76125
2015	41642.31043
2016	41968.98157
2017	42567.74365