Year	US Dollars adjusted for inflation)
1960	1053.28025
1961	1055.41237
1962	1064.83107
1963	1078.5676
1964	1071.60516
1965	1058.48509
1966	990.23808
1967	999.60589
1968	983.33023
1969	1020.50271
1970	1093.72902
1971	1120.75723
1972	1062.04029
1973	1061.52749
1974	1104.25185
1975	944.63572
1976	893.82668
1977	899.2236
1978	959.93429
1979	918.38379
1980	901.25375
1981	844.99601
1982	761.12643
1983	701.5355
1984	736.44407
1985	749.28743
1986	764.90118
1987	779.15521
1988	800.86078
1989	819.14378
1990	823.59186
1991	843.38199
1992	852.05945
1993	869.07332
1994	873.90774
1995	886.48791
1996	904.34873
1997	919.65157
1998	940.04697
1999	957.97973
2000	969.23554
2001	982.94483
2002	1001.25025
2003	1026.41105
2004	1056.01344
2005	1089.4818
2006	1129.25348
2007	1147.8807
2008	1220.72837
2009	1247.46307
2010	1312.60756
2011	1460.66002
2012	1558.4759
2013	1633.51425
2014	1659.79667
2015	1684.72758
2016	1708.77992
2017	1813.83558