Year	current international $
1990	3876.2970413494813
1991	4191.906324435314
1992	4450.8239440160805
1993	4341.352745405029
1994	4370.042374056403
1995	4500.1416357471735
1996	4600.6818392043215
1997	4753.147727417581
1998	4842.626666398536
1999	4955.798504720438
2000	5127.221626663021
2001	5197.9582802882705
2002	5437.426278915669
2003	5698.693635513615
2004	6488.704493075159
2005	6779.413455050369
2006	7393.542256102259
2007	7902.759053878432
2008	8158.708563982746
2009	8116.402859651808
2010	8581.068467524003
2011	9061.271374232063
2012	9481.204914593014
2013	9910.385738613619
2014	10684.808131576847
2015	10885.847445927522
2016	10708.800167678644
2017	10483.08462933154
2018	10556.806254638701
2019	10410.130531286886
2020	10254.798411968713
2021	10785.083434780849
2022	11987.413026986802
2023	12756.541632628834