Year	constant 2021 international $
1990	4915.193680233769
1991	5157.596468055454
1992	5399.577463952909
1993	5655.019144660319
1994	5981.845042115461
1995	6368.624137299949
1996	6756.273334679215
1997	6961.314615159898
1998	5953.61897218642
1999	5911.377990280715
2000	6113.11642659058
2001	6247.1310365527
2002	6439.165793818099
2003	6657.305402896632
2004	6903.763530824337
2005	7205.348825598577
2006	7503.580767107683
2007	7875.6869704642795
2008	8241.290031653041
2009	8513.821576503966
2010	8931.231140077905
2011	9363.940866713478
2012	9804.67374493588
2013	10224.782293315355
2014	10612.92942237028
2015	11007.491125107987
2016	11439.72206895559
2017	11899.327272233326
2018	12394.694397341553
2019	12895.3329182672
2020	12523.290429915043
2021	12897.103144469815
2022	13495.426663271677
2023	14072.853709753806