Year	US Dollars adjusted for inflation)
1966	815.50086
1967	875.53113
1968	939.69873
1969	995.36683
1970	1019.55188
1971	1053.88866
1972	1057.36821
1973	1072.54736
1974	1108.75935
1975	1166.44917
1976	1263.06424
1977	1308.01176
1978	1304.97864
1979	1334.25169
1980	1349.20785
1981	1293.49722
1982	1375.28472
1983	1361.16615
1984	1415.04943
1985	1466.72404
1986	1568.68403
1987	1531.86548
1988	1680.34999
1989	1695.42985
1990	1720.78049
1991	1811.40162
1992	1741.92089
1993	1699.40366
1994	1848.78324
1995	1722.19331
1996	1907.78645
1997	1853.01285
1998	1962.03424
1999	1958.95379
2000	1972.30029
2001	2091.23452
2002	2130.73392
2003	2230.90475
2004	2310.33845
2005	2358.44358
2006	2507.67466
2007	2566.2167
2008	2686.2283
2009	2765.85615
2010	2834.20472
2011	2942.03882
2012	2987.31592
2013	3077.31501
2014	3113.79941
2015	3209.71471
2016	3204.86465
2017	3292.44514