Year	current US$
1992	2100000000
1993	2816666666.6666665
1994	2031932773.1092436
1995	2202646720.3682394
1996	2228076923.0769234
1997	1896032357.4730356
1998	1835963581.1836116
1999	1541624548.736462
2000	1540746318.6077645
2001	1278776978.4172661
2002	1478234650.3473074
2003	1539339043.6168811
2004	2048086804.366141
2005	2573474106.471293
2006	3170860223.076062
2007	3759319317.0804443
2008	5264931660.73769
2009	4136696442.956624
2010	5088786003.740126
2011	4942076094.101471
2012	5340954071.6573305
2013	5142763835.789212
2014	5756007863.77285
2015	3547032241.009821
2016	3290672373.7825847
2017	4140571389.536635
2018	3956109320.3403206
2019	4376649011.871691
2020	4343379482.08192
2021	4672910081.046215
2022	5932866227.485625
2023	5209935657.638784