Year	constant 2015 US$
1990	23363601686.858196
1991	23106602613.208267
1992	15250356622.180294
1993	11834278052.01411
1994	11692266770.280205
1995	9119967981.448257
1996	9831324342.94624
1997	13164143754.674364
1998	12071520058.35473
1999	12916525879.940313
2000	14556925432.885082
2001	16462720444.208427
2002	17846514788.380615
2003	19380014988.013905
2004	21996420421.10068
2005	21402521460.194828
2006	23151635057.444485
2007	24448260258.386307
2008	24961697098.26271
2009	23006637035.663307
2010	24771061041.23271
2011	32301490029.51072
2012	35919252836.17293
2013	30675041641.11032
2014	32075787139.247776
2015	32749612425.977913
2016	33601357872.68735
2017	36106435869.84277
2018	40779679220.78856
2019	41173848085.84909
2020	39630296059.64565
2021	43613152406.84196
2022	34432850705.441696
2023	40871052579.543884