Year	constant 2021 international $
1990	11665.301434570056
1991	11253.730018340482
1992	11193.150771771787
1993	10715.322389170702
1994	10397.4079668809
1995	10587.476429194016
1996	10828.920866029322
1997	10765.523455721923
1998	11144.935162620854
1999	11341.851312840734
2000	11608.904306168395
2001	11793.775714190031
2002	12264.092587228393
2003	12885.570264084983
2004	13277.252789295671
2005	13804.62781504862
2006	14001.717053198265
2007	14202.671589464315
2008	14311.064550310051
2009	14225.021826779293
2010	14633.290150290028
2011	14788.856231671702
2012	14852.369949968785
2013	14941.760842102396
2014	15249.570446429068
2015	15425.940521278324
2016	15711.21733211706
2017	15637.838539620592
2018	15557.81641481086
2019	15411.723224758582
2020	14389.670265717516
2021	14690.916230057117
2022	14973.966259633668
2023	15347.532423437042