Year	constant 2021 international $
1990	8681.748029667673
1991	8645.996765583282
1992	8631.52227176823
1993	8305.756969412929
1994	7628.806089541554
1995	7721.409903355655
1996	7840.310566311929
1997	7632.946080268591
1998	7750.739469544677
1999	7351.631516344495
2000	7612.409017055622
2001	7610.31224079675
2002	7774.897551721145
2003	7624.142590159843
2004	7625.656587641373
2005	7926.627790788101
2006	8244.326391170107
2007	7420.756281325035
2008	7631.656882047615
2009	8184.309567114732
2010	8630.86736970309
2011	8539.67544890651
2012	9132.071553143829
2013	8851.402520019474
2014	9216.712451663576
2015	9036.552050124805
2016	8056.919193913067
2017	7426.440301525138
2018	7083.668882487778
2019	6996.581095339998
2020	6406.881077901811
2021	6323.7175792148155
2022	6272.327435336895
2023	6249.118074617053