Year	constant 2021 international $
1990	19677.508894565282
1991	18356.14619084864
1992	16326.027458250719
1993	15229.028299586662
1994	13631.370340207797
1995	13372.702931829584
1996	13293.393522920647
1997	13573.149319224576
1998	13378.188455071768
1999	13759.99915580674
2000	14820.378252837136
2001	15359.799285391331
2002	16145.860711950492
2003	17199.958267330712
2004	18569.40594185336
2005	19742.875592560442
2006	21295.560015025225
2007	22958.600734634052
2008	23949.54374445755
2009	22511.908707264764
2010	23407.35908023959
2011	24565.792305859588
2012	25249.903233814515
2013	25838.31449596347
2014	26079.303416272847
2015	26042.92771983684
2016	26308.537853339618
2017	27181.113670840274
2018	28031.518333156197
2019	28648.484909578816
2020	28020.81403631586
2021	29894.98759918037
2022	30294.62307100459
2023	31343.301280981508