Year	constant 2021 international $
1990	23403.68980492736
1991	18816.121930937883
1992	17023.112826917837
1993	15573.033788784502
1994	16304.507390646972
1995	17526.984528919467
1996	18843.57115898736
1997	20103.93815805593
1998	20568.3002574751
1999	20480.55320541267
2000	21295.0436718624
2001	22821.033145629033
2002	24135.13627389955
2003	25479.360480226118
2004	26536.978650991692
2005	27644.446755039033
2006	29041.07764520549
2007	30521.587725021225
2008	31141.677082081893
2009	28925.131046788032
2010	28635.715776545283
2011	28718.018424008784
2012	28143.897287336913
2013	28135.792772068813
2014	28154.10823494123
2015	29110.70825298648
2016	30384.47639145222
2017	31786.20082212608
2018	33028.29203293033
2019	34355.2229060333
2020	31564.4520655316
2021	37232.59577198805
2022	40090.239120319886
2023	41343.52425623726