Year	US Dollars adjusted for inflation)
1982	16449.04544
1983	17419.55503
1984	18129.40793
1985	17515.97976
1986	17923.80074
1987	19648.61659
1988	20351.57693
1989	20602.19677
1990	21532.21942
1991	21700.12932
1992	23996.39408
1993	24703.3655
1994	25235.16295
1995	25544.58069
1996	24928.28283
1997	24363.6029
1998	22780.46118
1999	21777.32979
2000	22524.48618
2001	22640.67459
2002	24072.06125
2003	26220.0959
2004	32438.39508
2005	34246.02257
2006	37959.20971
2007	42537.77527
2008	43081.35323
2009	42739.32825
2010	52374.79445
2011	62279.51728
2012	66449.03911
2013	72183.52947
2014	69749.15662
2015	53580.49086
2016	52144.02889
2017	55936.80308