Year	current US$
1985	5436325206.79929
1986	5784958225.43652
1987	5187515802.05003
1988	5072252498.79495
1989	7606104095.41593
1990	6654135061.69319
1991	8375021832.30031
1992	950212792.225714
1993	1157568942.78547
1994	208452954.278407
1995	2518834106.20542
1996	2998622788.93286
1997	3950231711.83568
1998	3887560641.27528
1999	2606974330.30121
2000	3261792173.73377
2001	4259081638.14712
2002	9587531694.05095
2003	11841538648.7324
2004	14498522980.3379
2005	19664495927.6405
2006	27561990009.6016
2007	30719156009.2045
2008	32734520130.9166
2009	41922068582.494
2010	43671933104.5708
2011	59665657182.0996
2012	72141626387.2182
2013	83346229610.4108
2014	94702895519.7016
2015	66790173500.1792
2016	35196052952.4937
2017	45362409567.1982
2018	47156217466.9987
2019	42988475833.8169
2020	36803520680.4863
2021	42541367192.0476