Year	constant 2021 international $
1990	8971.03436779865
1991	9030.507471579558
1992	8840.040182149734
1993	8570.77275862711
1994	8631.361213595224
1995	8740.108791157108
1996	9059.585254845588
1997	9450.601300866983
1998	10496.63735702067
1999	11155.293259750892
2000	11634.231673992155
2001	11345.540669745087
2002	11703.536659856725
2003	12751.188644059204
2004	12578.864627225486
2005	14153.48173209706
2006	13498.14175959686
2007	14230.200231991757
2008	14268.86865449452
2009	13234.509976367939
2010	13075.649441978709
2011	13074.868906910218
2012	12813.047012152527
2013	12998.452961964775
2014	13831.349876560073
2015	14598.079405320723
2016	15019.521378338137
2017	15562.304115069015
2018	16118.80833689113
2019	16110.697758278713
2020	13788.90665433778
2021	14325.554848226311
2022	15272.80785201692
2023	15912.811801024927