Year	constant 2021 international $
1990	12177.599078481104
1991	12141.590799659027
1992	11917.310094011953
1993	12236.6999933911
1994	12566.511972994482
1995	13216.466186501539
1996	13310.532644075745
1997	13514.075790516512
1998	13306.283439122943
1999	13050.638708199589
2000	13467.052719010788
2001	13427.600972753347
2002	13648.421930219756
2003	13667.457715843471
2004	14319.79733206601
2005	14625.909596746262
2006	15097.842076338813
2007	15909.409324642984
2008	16499.576922824945
2009	16361.899297138547
2010	17266.858448771352
2011	17878.728933427203
2012	18075.398870578796
2013	18668.24289240852
2014	18514.50253767146
2015	17708.303720562522
2016	16949.14987801882
2017	17079.21153290341
2018	17087.872988137282
2019	17183.423392118944
2020	16609.4287022429
2021	17121.5421680308
2022	17593.54759380683
2023	18011.285457049642