Year	current international $
1990	7989.636104252459
1991	8558.302620369208
1992	8956.287618297669
1993	9062.500178191163
1994	9181.66321469554
1995	9459.547191922444
1996	9858.229222786069
1997	10212.72621293076
1998	10623.843602144916
1999	10625.53957902386
2000	11391.021282605743
2001	11608.542787382206
2002	11715.853927440217
2003	12254.80909996057
2004	13362.911134752927
2005	14145.762515442239
2006	15171.160096326992
2007	16086.534146619973
2008	16632.82987538329
2009	16382.325907799832
2010	16932.09447771051
2011	17555.840178090773
2012	18083.664447979634
2013	17943.80918893129
2014	17673.905854592977
2015	16027.528636686833
2016	15812.71736121204
2017	16511.459812874044
2018	17364.02184563184
2019	17219.041047915263
2020	16262.570088052831
2021	17815.32427327582
2022	19817.531080756537
2023	20625.887659899978