Year	constant 2021 international $
1990	12358.979590524803
1991	12205.040209860323
1992	11009.143539022234
1993	10150.015296288257
1994	8973.06265466154
1995	8065.988956100236
1996	8319.800304799684
1997	9306.857440643804
1998	10134.177915384638
1999	10526.003615021606
2000	11189.103566889553
2001	11778.085915343538
2002	12451.331015666925
2003	13421.902041447682
2004	15061.06770285035
2005	16589.73101824546
2006	18360.782137752027
2007	20031.514171701026
2008	22151.109787336816
2009	22250.060065153913
2010	24037.649503455807
2011	25389.979117665785
2012	25858.810227473135
2013	26128.321955885243
2014	26564.431126408163
2015	25513.185299817982
2016	24846.959666114082
2017	25503.974673438843
2018	26363.569401571494
2019	26798.863093010757
2020	26731.49434864937
2021	27611.18011351555
2022	26537.550343774
2023	27718.367024277977