Year	current international $
1990	6922.254699861846
1991	5996.714006887917
1992	4345.036182835399
1993	4395.839062565145
1994	3109.942463381962
1995	3145.9458050607573
1996	3021.3098832891233
1997	3135.607025382012
1998	2964.601516557693
1999	2909.850349949156
2000	3044.670505778286
2001	3310.52882631493
2002	3632.6109182473947
2003	3959.9515099265163
2004	4378.1747578796285
2005	4865.934564246976
2006	5271.38970423064
2007	5589.568507652017
2008	6153.351521380805
2009	5827.178888855629
2010	6323.062878990409
2011	6832.941565029611
2012	7254.662490323135
2013	8232.523804736804
2014	8643.064314353434
2015	9197.618382042723
2016	10325.840489612647
2017	11252.113546528273
2018	11868.19554632228
2019	13413.2232935126
2020	13527.441313096733
2021	15682.070328465348
2022	16301.76568699708
2023	17384.376889622665