Year	constant 2021 international $
1990	20991.57859616398
1991	21345.3895859699
1992	21250.388868059443
1993	21973.164331512246
1994	23007.423700265874
1995	21577.85460263614
1996	22541.650738861375
1997	23300.904895162323
1998	23948.023128732868
1999	24415.739071531676
2000	25504.03907495204
2001	23973.578392923406
2002	23912.36712634729
2003	25079.59687510673
2004	26234.87628120893
2005	27608.742700039227
2006	30722.601555428668
2007	33125.47812674458
2008	32629.502158440144
2009	28290.06134725185
2010	25718.774172169506
2011	24914.39662268707
2012	25477.119243700094
2013	25088.56667009047
2014	25431.02496710813
2015	25596.321619695158
2016	26462.411934125077
2017	26949.118076604394
2018	28663.452588959182
2019	29394.629011781177
2020	23704.04868782601
2021	25493.12955486905
2022	27757.173527390023
2023	28665.596627755458