Year	current international $
1990	3917.7824550169807
1991	3918.8129177177248
1992	4241.657161338665
1993	4421.545055330272
1994	4736.634500552277
1995	4947.817156219425
1996	5251.791633200946
1997	5172.652113489143
1998	5237.754864340099
1999	5712.8172954186675
2000	5680.221093270283
2001	5862.24049340801
2002	6081.886606247585
2003	6202.568465916516
2004	6642.026292614009
2005	6833.355361374538
2006	7108.279800056662
2007	7177.271718115617
2008	7340.973743900073
2009	7246.283448233792
2010	7519.469114269738
2011	7854.566625559271
2012	8392.59767929541
2013	9035.340487875323
2014	10735.72138177664
2015	11751.371679493639
2016	11994.938196261748
2017	12815.936705527405
2018	13199.784121666939
2019	13168.371179369107
2020	11168.639896774084
2021	10593.91273336521
2022	13534.194309137625
2023	15046.4668270452