Year	current US$
1988	1114023000
1989	1093186200
1990	1347970800
1991	1396040326.914951
1992	924287778.8134954
1993	806955783.0259284
1994	931907241.6909006
1995	1205247699.831459
1996	1194381018.2550867
1997	1407209659.6195877
1998	1540082668.6883109
1999	1690850791.0696394
2000	3895455265.678098
2001	3633840577.9798265
2002	3613574348.5398583
2003	2794453921.1857243
2004	3374290812.7764482
2005	3817120980.6316266
2006	4021804770.2455573
2007	4808277560.122273
2008	5337533358.079026
2009	5990040806.692955
2010	6226192398.100225
2011	6664903380.170699
2012	6993083031.991546
2013	7612045054.895671
2014	7847987746.365882
2015	7787255823.051384
2016	7484449170.174979
2017	8078319714.645126
2018	8774631899.628109
2019	8163358112.8061285
2020	7822894503.059971
2021	10802517148.509483
2022	9755622607.205448
2023	9488459441.142603