Year	current US$
1980	4969487915.71059
1981	4494022410.2863
1982	4493960808.92435
1983	4436479690.87907
1984	3654776916.0563
1985	3593805966.55527
1986	4070519071.54296
1987	2914030966.5539
1988	2866229031.19079
1989	2817836718.22742
1990	3518929711.47326
1991	2818373101.06286
1992	3242683452.45345
1993	3579075550.18708
1994	2993836342.46089
1995	3137279218.1336
1996	4121707098.05124
1997	3557790860.70578
1998	3697160734.84004
1999	3699856425.68706
2000	4026773956.90099
2001	4774598712.01507
2002	4592676042.21559
2003	5439931022.72084
2004	4305413754.84194
2005	4976623142.70341
2006	5411481724.73914
2007	7216045095.10479
2008	9111025621.1172
2009	7757535560.90184
2010	8080948175.56535
2011	9387896470.51695
2012	9136108379.94697
2013	9952824529.61698
2014	10167160447.0078
2015	9027729503.81849
2016	9457470707.15391
2017	10877262140.4105
2018	11710167964.9539
2019	12018928346.2692
2020	11103281159.5656
2021	12500340515.8336