Year	constant 2015 US$
1995	9967611146.923306
1996	10971012540.677044
1997	14158732263.257698
1998	12634949689.728367
1999	12233185141.133936
2000	13104260590.453646
2001	14668717429.244423
2002	17328918004.631058
2003	19346749664.653667
2004	20369256535.231617
2005	21433745993.318596
2006	23199159220.997955
2007	24607463938.480453
2008	25552237805.764297
2009	20345877153.955315
2010	19733437552.354527
2011	20233710822.172688
2012	19755688461.312294
2013	20404656127.157562
2014	21104973998.87053
2015	23062230960.150093
2016	24563147074.193367
2017	26648700387.326405
2018	28626427399.32121
2019	30538697580.291733
2020	26776963897.983704
2021	31401114603.570145
2022	39721727114.06879
2023	37617266813.63841