Year	current international $
1990	4352.663779216134
1991	4582.9364820800365
1992	4784.508271740703
1993	4999.657462386981
1994	5106.030066137994
1995	5370.856286121751
1996	5641.812030054923
1997	5871.753507798152
1998	6174.629751387136
1999	6306.133376461121
2000	6633.8911044441265
2001	6798.132023085845
2002	6697.823846166916
2003	7244.879028161177
2004	7651.904611403258
2005	7932.019022264018
2006	8549.150707029155
2007	9334.12824859633
2008	10190.4279156082
2009	10132.622525149778
2010	10329.552077580458
2011	10521.08314820321
2012	10233.851701697682
2013	10447.197664687668
2014	11147.70327685017
2015	11277.23008023524
2016	12092.763365025246
2017	11435.694948663227
2018	12809.711513362809
2019	14451.537919756482
2020	12743.863886864327
2021	14472.285861533921
2022	16283.164030733331
2023	17598.643617953956