Year	US Dollars adjusted for inflation)
1960	21075.59952
1961	22263.99853
1962	23343.23405
1963	23307.60992
1964	25265.47696
1965	26211.33679
1966	26714.38425
1967	27411.47329
1968	28328.06847
1969	29953.00938
1970	30541.92613
1971	31241.86663
1972	32284.27457
1973	33403.11631
1974	32874.77597
1975	32302.68822
1976	34130.58966
1977	34660.81236
1978	35322.58788
1979	36599.22937
1980	36378.19382
1981	36146.13259
1982	37505.54068
1983	38505.63876
1984	40130.85564
1985	41720.65741
1986	43708.25469
1987	43763.90411
1988	43736.68079
1989	43992.47843
1990	44569.01112
1991	45073.02521
1992	45803.40009
1993	45655.91862
1994	47928.3658
1995	49122.88193
1996	50262.2255
1997	51685.98052
1998	52640.93952
1999	54013.77798
2000	55850.63643
2001	56108.96272
2002	56190.81452
2003	56256.76761
2004	57608.73489
2005	58792.67138
2006	60892.76661
2007	61174.54515
2008	60504.7753
2009	57229.05164
2010	58041.41122
2011	58575.61892
2012	58487.78637
2013	58788.08179
2014	59437.9339
2015	59967.74282
2016	60670.23721
2017	61582.16607