Year	constant 2015 US$
1993	4226406431.048827
1994	4375122210.36953
1995	4611884494.63867
1996	4730554664.8812475
1997	5933403108.404295
1998	6714293814.0066395
1999	6746132395.916014
2000	6277271110.057029
2001	6674798483.639059
2002	6863072835.562106
2003	7561221617.34609
2004	8868731521.354683
2005	10635595295.262495
2006	11649108692.539055
2007	13118694020.584366
2008	13236484347.104677
2009	10548346530.082413
2010	13102863490.660927
2011	16270221005.889051
2012	17055466549.587097
2013	17533023087.96991
2014	17995977327.199207
2015	17725575721.59921
2016	18580396599.642567
2017	19478209992.684753
2018	20042899906.90702
2019	21051268492.90975
2020	19903146772.716785
2021	24307180669.99022
2022	25038229837.519905
2023	23318355044.042953