Year	current international $
1990	18251.74026724512
1991	19780.170135891913
1992	21312.599534124827
1993	22776.119550992906
1994	24117.294230076106
1995	24713.21337304871
1996	25098.245762448205
1997	26610.608883870143
1998	25116.1144102912
1999	25861.831795005008
2000	28224.527138329875
2001	28808.8083140283
2002	29609.76836860543
2003	31178.67042478365
2004	34532.23424914041
2005	38079.53410341278
2006	41745.45222512891
2007	45257.60061567452
2008	46830.21614481687
2009	45861.485482998054
2010	49197.64359932059
2011	52277.4664432843
2012	52149.681269420595
2013	53517.41954988799
2014	54514.92680598191
2015	56043.04269569703
2016	56761.48241322235
2017	59260.91317619376
2018	60900.275292453734
2019	61221.41954007013
2020	58187.476407253474
2021	65884.93762606029
2022	68547.63946663213
2023	71481.56813062474