Year	US Dollars adjusted for inflation)
1984	17028.54298
1985	17042.87624
1986	20060.63428
1987	21640.32506
1988	23681.03426
1989	24798.54867
1990	25443.80595
1991	25602.61879
1992	25663.42022
1993	26254.12902
1994	27241.89941
1995	28305.93102
1996	30333.73652
1997	32733.27128
1998	36884.13646
1999	41607.21855
2000	43464.70775
2001	45402.20074
2002	47625.67324
2003	50152.52803
2004	52232.44009
2005	54749.51786
2006	58354.98733
2007	62050.66581
2008	67461.40946
2009	68209.40565
2010	73935.679
2011	76836.26794
2012	80989.33644
2013	84002.24186
2014	87612.12116
2015	84046.13602