Year	US Dollars adjusted for inflation)
1960	13031.03159
1961	13677.46421
1962	13953.95
1963	14438.35666
1964	15220.81972
1965	15648.5267
1966	16416.0054
1967	16783.88969
1968	17443.70498
1969	18474.54001
1970	19573.86688
1971	20483.45329
1972	21628.96612
1973	22561.3705
1974	23410.89027
1975	23387.70638
1976	24501.74933
1977	25736.55121
1978	25703.13738
1979	27126.17818
1980	27595.83476
1981	27485.83215
1982	28018.54088
1983	28898.21885
1984	28914.85659
1985	29623.43413
1986	30285.93319
1987	30677.54399
1988	31643.80896
1989	32726.05943
1990	33888.99559
1991	34707.07123
1992	35045.84429
1993	34941.1434
1994	35643.02768
1995	36537.99304
1996	37346.00743
1997	38084.70138
1998	39405.41603
1999	40727.48494
2000	42001.21116
2001	42370.9316
2002	42859.3294
2003	43052.60307
2004	43956.58266
2005	44637.85641
2006	45951.73469
2007	47510.29379
2008	48053.48308
2009	46123.49069
2010	46858.04327
2011	48065.31671
2012	48172.2377
2013	47901.36543
2014	47922.33985
2015	47905.54315
2016	48077.87836
2017	49129.23366