Year	constant 2021 international $
1990	5377.944656555803
1991	3895.416288370146
1992	3637.4403497384137
1993	4009.5486552671205
1994	4369.195613228214
1995	4981.953274173411
1996	5469.197265890392
1997	4902.5279961036495
1998	5369.07630993237
1999	6099.703925492861
2000	6565.11270374311
2001	7176.613373618521
2002	7524.7132351361715
2003	7970.493165148949
2004	8445.26113769001
2005	8957.709655221763
2006	9546.493011843238
2007	10194.435347905459
2008	11043.438976783948
2009	11491.045004286572
2010	11976.32146744007
2011	12314.25043852941
2012	12509.415646040366
2013	12657.931725932447
2014	12909.240795087771
2015	13234.144059906655
2016	13694.731077913726
2017	14228.567070058485
2018	14837.02492722471
2019	15211.443311120483
2020	14793.85288592681
2021	16261.804554187958
2022	17260.119466105563
2023	18059.93790720119