Year	US Dollars adjusted for inflation)
1960	2856.53118
1961	2729.15765
1962	2847.14746
1963	2879.02314
1964	2895.99729
1965	3075.45575
1966	3211.32499
1967	3287.6171
1968	3456.88982
1969	3545.3033
1970	3707.09645
1971	3855.17933
1972	4066.17092
1973	4272.76816
1974	4399.81815
1975	4381.21461
1976	4506.72702
1977	4783.02605
1978	4951.75934
1979	5061.10383
1980	4965.54712
1981	4725.05861
1982	4264.32345
1983	4269.9526
1984	4415.67076
1985	4346.52578
1986	4481.82522
1987	4671.18887
1988	4730.44817
1989	4847.59647
1990	4911.55433
1991	4911.51182
1992	5228.49571
1993	5459.06799
1994	5563.02243
1995	5651.6804
1996	5585.13868
1997	5758.276
1998	6020.76177
1999	6125.90327
2000	6230.47949
2001	6332.83691
2002	6434.39213
2003	6606.15649
2004	6792.10987
2005	6954.03921
2006	7351.86087
2007	7841.92586
2008	8095.30973
2009	7911.7952
2010	8199.41462
2011	8449.96261
2012	8753.22562
2013	8852.40112
2014	9065.02645
2015	9296.00211
2016	9583.86089
2017	9791.99568