Year	current international $
1990	4411.028568347974
1991	4873.574471297974
1992	5308.162864346831
1993	5797.167020158564
1994	6303.464808491302
1995	6862.812133999414
1996	7287.02155281931
1997	7116.612033419732
1998	6565.803549901063
1999	6885.400083214044
2000	7282.310401253588
2001	7632.165856671947
2002	8154.001520609774
2003	8836.4942909444
2004	9565.928136289485
2005	10199.335574336646
2006	10953.276221572554
2007	11771.453772665887
2008	12114.39972727433
2009	12018.290710526284
2010	12990.788283526263
2011	13284.119784593895
2012	14675.633556789
2013	15274.232012150038
2014	15421.415567255035
2015	15846.523157655543
2016	16730.941041751066
2017	17638.277307626027
2018	18942.109760610045
2019	20023.445712501736
2020	19208.200446292256
2021	20280.93371471379
2022	22213.799374711358
2023	23422.924193257142