Year	constant 2021 international $
1990	21448.30788580351
1991	18898.737532592673
1992	18326.81721810441
1993	18242.025408615285
1994	18805.369855880785
1995	19112.069942129063
1996	19160.70522968969
1997	19802.80396789131
1998	20623.043993036645
1999	21316.67953315559
2000	22329.423855398596
2001	23292.51118266651
2002	24466.445324740343
2003	25536.30924119825
2004	26873.747878049737
2005	28083.578008854023
2006	29237.266594892357
2007	29363.816598201935
2008	29710.58952971032
2009	27793.34529398588
2010	28156.036987201416
2011	28763.052182541993
2012	28550.51453525583
2013	29145.29049380493
2014	30460.72464078824
2015	31665.227778947443
2016	32457.825327303373
2017	33934.514635817206
2018	35799.56193713009
2019	37557.92670286754
2020	35949.91886800583
2021	38647.998084709725
2022	40699.56969470807
2023	40553.77674458318