Year	current international $
1990	18016.67034306972
1991	21021.000364150663
1992	20432.900799137322
1993	19686.498234598548
1994	20070.494928782715
1995	19647.845970314072
1996	20065.6907408584
1997	21115.264570220614
1998	20269.0337587543
1999	20394.53568499751
2000	21217.845476440656
2001	20823.833624353112
2002	20443.212543012858
2003	22976.56787119666
2004	24019.10478841126
2005	26998.80548516293
2006	28968.8049877896
2007	30965.480693596877
2008	30847.210157459853
2009	29056.789206127818
2010	30261.340794109754
2011	16091.435986222456
2012	28240.33647570072
2013	22279.748660300662
2014	18455.642449780302
2015	18885.07642670291
2016	17905.777939548872
2017	19044.876745717665
2018	19961.346046263112
2019	17835.280015672353
2020	16261.879022793726
2021	18171.52296506044
2022	19487.901016105556
2023	19641.14394562088