Year	US Dollars adjusted for inflation)
1985	6236082981.16176
1986	6454345877.58857
1987	6376893724.17974
1988	7263282021.62651
1989	6791168642.01824
1990	6750421655.20268
1991	6271141778.69189
1992	4452510596.68266
1993	3722298865.73334
1994	2929449281.29069
1995	2566197559.47514
1996	2137642598.6982
1997	2173982433.08981
1998	2289203518.73461
1999	2373904041.4456
2000	2570938100.91492
2001	2833173814.25923
2002	3139156583.89701
2003	3484463717.4761
2004	3843363539.94587
2005	4100868784.0261
2006	4387929676.60756
2007	4730188250.37713
2008	5103873019.56461
2009	5297820244.95672
2010	5642178579.58438
2011	6059699759.65267
2012	6514177191.26575
2013	6996226340.54257
2014	7464921079.82827
2015	7912816344.61796
2016	8458800787.50718
2017	9059375703.27769