Year	constant 2021 international $
1990	4886.191774546543
1991	5070.923710187803
1992	5109.721181241526
1993	5220.604600037273
1994	5386.63198158668
1995	5529.734853400868
1996	5677.146905427954
1997	5868.350268412633
1998	6086.524497424746
1999	5975.571508896024
2000	5998.333853746336
2001	5997.601150722676
2002	6038.4474338773425
2003	6020.725030538009
2004	6115.87028683067
2005	6305.24914961085
2006	6516.387467905096
2007	6679.524012970676
2008	7003.096057390479
2009	7074.824922057691
2010	7177.697513423359
2011	7451.562823834097
2012	7530.106772319531
2013	7900.370784003785
2014	8324.156987885386
2015	8779.59078894399
2016	9158.20895969517
2017	9285.810903651214
2018	9585.536758216613
2019	9694.593758838248
2020	8811.178216583867
2021	9105.039570542905
2022	9289.554525970525