Year	current international $
1990	7150.795110874179
1991	7355.63807457423
1992	7506.3395893888755
1993	7713.173286267832
1994	8088.986995563025
1995	8396.581887909208
1996	8808.768745170784
1997	9198.359530040396
1998	9491.777663473911
1999	9880.295732645902
2000	10345.56697711946
2001	10631.92791254755
2002	10930.077587280928
2003	11295.525222542223
2004	11865.742948553592
2005	12510.302327703906
2006	13398.62990734328
2007	14177.501583355619
2008	14471.792647406628
2009	14171.333156577348
2010	14423.975936049834
2011	14941.360961003116
2012	15199.427047399598
2013	15530.483112150798
2014	15861.598855740493
2015	16035.002113929784
2016	15876.838902476817
2017	16937.53560816388
2018	17525.3235679629
2019	18575.094521518804
2020	16860.261153407617
2021	19757.122425393023
2022	26327.03436903786
2023	31173.876500682316