Year	constant 2015 US$
1995	33993978744.201477
1996	35439800977.91319
1997	40182542907.13376
1998	39410425970.285385
1999	38532827105.52565
2000	39047061101.26739
2001	40652716887.80849
2002	45092743094.195435
2003	48401033055.32966
2004	50188087188.93785
2005	52469296255.326996
2006	55167050294.73865
2007	58215181730.53134
2008	60583719864.59665
2009	54385544437.13408
2010	51979888761.54297
2011	52040822827.29414
2012	50665036774.37323
2013	50622388819.79171
2014	49685700210.915924
2015	50749624822.61871
2016	52428988014.0729
2017	54562685300.34716
2018	57116365234.04345
2019	59027394217.508575
2020	57175796593.16969
2021	61766428309.1111
2022	65866186216.2393
2023	66689227421.955