Year	constant 2015 US$
1985	2860237439.2938337
1986	1893007553.9512475
1987	1405444766.6116076
1988	1198180825.5403745
1989	957360332.2361696
1990	1158406026.489822
1991	1285609733.9021666
1992	1281781920.847031
1993	1743357736.774485
1994	3024116199.4002337
1995	2002503161.0867293
1996	1997260120.953855
1997	1269792619.644454
1998	1187827568.5045087
1999	1526308016.6404552
2000	1753865478.217905
2001	1865872392.2381616
2002	1824964382.6315873
2003	2100172641.3797796
2004	2102457554.435403
2005	2209883022.0167327
2006	2056122051.0311766
2007	4281924758.640569
2008	3785784153.4458733
2009	3869845296.330693
2010	4330092021.067872
2011	4154747629.801589
2012	5736570354.396528
2013	6772109773.691933
2014	7893159686.394888
2015	9699252801.098614
2016	8543098880.513616
2017	4268704086.406642
2018	3435571036.40453
2019	3355376893.497036
2020	2579977562.614716
2021	2941173119.799674
2022	3234016893.8064404
2023	3512166412.8551426