Year	current US$
1988	355950800
1989	395418600
1990	424681800
1991	397772592.61664736
1992	257035235.58901262
1993	247724820.98324582
1994	292024161.14793056
1995	539983560.3569751
1996	411635106.6965527
1997	359863489.24699605
1998	358281188.80943197
1999	417972580.63490695
2000	887740263.4150115
2001	875085037.9496604
2002	850325075.9971747
2003	757433901.2127175
2004	964377288.8326788
2005	1118905950.610477
2006	1257443928.1423256
2007	1437798339.9654944
2008	1775510717.0243955
2009	1955589790.8247721
2010	1716825847.0784435
2011	1906309193.6299527
2012	2210782625.6945252
2013	2349636874.056498
2014	2517596623.2207403
2015	2519764492.9468813
2016	2302695455.2835174
2017	2472989614.2489743
2018	2737909517.5778513
2019	2515145418.9967375
2020	2558927192.11172
2021	4042919036.8484955
2022	4684387925.98764
2023	4859168470.549823