Year	US Dollars adjusted for inflation)
1960	8749.05784
1961	9413.23499
1962	9880.86365
1963	10542.29879
1964	10937.69164
1965	11522.66674
1966	11224.44796
1967	11072.08611
1968	12604.09356
1969	13945.75559
1970	14476.72534
1971	14750.56378
1972	16127.11638
1973	16352.9027
1974	16901.49522
1975	17055.63889
1976	16732.8827
1977	16531.77837
1978	17085.99751
1979	17686.52745
1980	17555.37405
1981	18128.19742
1982	18161.40336
1983	18433.07399
1984	18363.52746
1985	18770.86698
1986	19257.14037
1987	20301.47854
1988	20548.91074
1989	20319.36264
1990	21141.29699
1991	21444.75498
1992	22323.83538
1993	22633.17572
1994	23692.85162
1995	24592.24812
1996	25230.31031
1997	25508.75376
1998	25970.83378
1999	26233.30559
2000	27636.34077
2001	26999.36506
2002	26503.84335
2003	26229.39977
2004	26947.4445
2005	27570.94557
2006	28499.32593
2007	29614.07515
2008	29962.00561
2009	29658.52263
2010	30642.94062
2011	31482.99716
2012	31507.47856
2013	32196.35817
2014	32661.29413
2015	32993.31428
2016	33677.46195
2017	34134.80561