Year	US Dollars adjusted for inflation)
1960	3425.42997
1961	3668.48808
1962	3747.85989
1963	3671.29025
1964	3690.91512
1965	3697.50627
1966	3745.99592
1967	3825.23772
1968	4151.00984
1969	4438.58864
1970	4706.72119
1971	5109.59134
1972	5587.38992
1973	6216.91646
1974	6618.72001
1975	6798.95591
1976	7288.44015
1977	7444.83947
1978	7505.24448
1979	7825.85333
1980	8340.3231
1981	7789.3179
1982	7654.52688
1983	7226.45158
1984	7440.05103
1985	7861.00899
1986	8315.92982
1987	8446.10435
1988	8277.58858
1989	8392.25284
1990	7987.05522
1991	7967.80338
1992	7797.82726
1993	8028.20393
1994	8320.26047
1995	8549.02152
1996	8599.10165
1997	8751.37999
1998	8645.5134
1999	8555.91567
2000	8779.2908
2001	8777.35713
2002	8924.89696
2003	8911.31951
2004	9309.89206
2005	9495.48465
2006	9761.83428
2007	10244.26715
2008	10656.86947
2009	10538.77828
2010	11224.15408
2011	11560.41875
2012	11673.77054
2013	11915.41705
2014	11870.14841
2015	11351.56575
2016	10868.65344
2017	10888.98239