Year	US Dollars adjusted for inflation)
1960	17036.88517
1961	17142.19377
1962	17910.27879
1963	18431.1584
1964	19231.17186
1965	20207.74954
1966	21274.13549
1967	21569.83561
1968	22380.60677
1969	22850.01083
1970	23309.62095
1971	23775.27692
1972	24760.14538
1973	25908.9128
1974	25540.501
1975	25239.91991
1976	26347.80928
1977	27286.25151
1978	28500.24046
1979	29082.59378
1980	28734.39926
1981	29191.99949
1982	28362.49462
1983	29406.25747
1984	31268.97564
1985	32306.83306
1986	33133.69544
1987	33975.6548
1988	35083.96904
1989	36033.3302
1990	36312.41418
1991	35803.86842
1992	36566.17377
1993	37078.04968
1994	38104.97247
1995	38677.71509
1996	39681.51986
1997	40965.84665
1998	42292.8912
1999	43768.88499
2000	45055.81792
2001	45047.4872
2002	45428.64568
2003	46304.03609
2004	47614.27986
2005	48755.61606
2006	49575.40101
2007	49979.53384
2008	49364.64455
2009	47575.60856
2010	48375.40695
2011	48786.45498
2012	49498.39092
2013	49971.95136
2014	50871.67408
2015	51933.40481
2016	52319.16335
2017	53128.5397