Year	constant 2015 US$
1995	1552687115374.2573
1996	1125816701925.584
1997	1049874752766.2872
1998	513333614497.0208
1999	364112860897.968
2000	228945775873.67142
2001	198203471106.51703
2002	942399310256.4025
2003	472595375883.6634
2004	1176297371116.2722
2005	1158608817585.551
2006	1509889896447.8494
2007	2485067689329.795
2008	2764121212796.995
2009	3356318069508.9985
2010	3854013815395.564
2011	4172738011266.361
2012	4495230206255.065
2013	4887906227670.839
2014	5237568891336.865
2015	5440079848107.079
2016	5834121658570.526
2017	6206919927250.133
2018	6630706066657.859
2019	6884871178561.249
2020	7082010245912.18
2021	7372019447960.604
2022	7636516487083.231
2023	7920612846008.861