Year	constant 2021 international $
1994	3178.757847078211
1995	3558.5131121747604
1996	3799.7445541848656
1997	4086.6867612534375
1998	4300.863800672593
1999	4485.50065793333
2000	4802.740288930825
2001	5316.952179048588
2002	6103.547378467113
2003	7003.071378769632
2004	7843.121025747857
2005	8993.020944788967
2006	10300.311105172159
2007	11884.734584765809
2008	12864.934357833023
2009	10899.381419799778
2010	11291.925060341542
2011	11737.189419378612
2012	12717.021214009208
2013	13450.627210868175
2014	13772.722589371386
2015	14197.79787412003
2016	14064.680369846345
2017	15364.442046965558
2018	15968.672074927597
2019	17229.67246669604
2020	15639.591632661031
2021	16404.286451931417
2022	18272.829958972237
2023	20220.723194863738