Year	current US$
1980	333326143.58609
1981	314208612.978439
1982	310029317.679999
1983	318730880.156704
1984	329235260.797828
1985	487525357.292731
1986	473040505.227728
1987	481879611.360375
1988	510106615.350909
1989	540022920.206463
1990	574283719.442304
1991	552444013.899161
1992	416630709.836306
1993	293216039.402765
1994	211799456.618024
1995	297699484.54625
1996	395005283.735462
1997	424992488.685872
1998	400272375.234295
1999	321531362.621967
2000	456629537.912535
2001	471414474.72435
2002	865024914.28368
2003	1020180766.81746
2004	1354864706.40954
2005	2034075632.46425
2006	3022216484.14377
2007	3955410645.29938
2008	5305689768.98473
2009	4912309931.78211
2010	5695643692.04838
2011	7519367119.90742
2012	8895692970.33427
2013	9800993981.03973
2014	10248037627.0165
2015	6928944569.29421
2016	3973952581.95368
2017	5346112080.69066
2018	5523733821.45464
2019	4878309362.4172
2020	4218170364.01126
2021	5093080205.11864