Year	constant 2021 international $
1990	17073.15807681934
1991	18369.01071745871
1992	19553.825342158776
1993	20873.21919329608
1994	21795.840693329257
1995	20898.53191249249
1996	21777.308349476694
1997	23263.244023442094
1998	23880.731382242735
1999	22807.982151342385
2000	22373.036783090007
2001	21152.8567790195
2002	18647.099858100486
2003	20086.51231672032
2004	21679.002559219036
2005	23355.330781419052
2006	24975.018705876926
2007	26952.093776941765
2008	27768.684380979583
2009	25861.543571102957
2010	28407.430573463665
2011	29767.772411443017
2012	29129.16901884308
2013	29497.85259282327
2014	28442.248189117257
2015	28905.76134813141
2016	28006.773699939087
2017	28499.034248896918
2018	27472.610250859972
2019	26656.793919446813
2020	23785.784380564306
2021	26086.802355227446
2022	27127.439096933253
2023	26466.546559696104