Year	current US$
1996	2304000000
1997	3153000000
1998	3146000000
1999	3040000000
2000	3252000000
2001	3382000000
2002	3698000000
2003	4050000000
2004	4739000000
2005	4472000000
2006	5108182800
2007	6785000000
2008	7956000000
2009	8187000000
2010	9921000000
2011	11859000000
2012	12087000000
2013	13820000000
2014	14500000000
2015	16015000000
2016	16758000000
2017	17100000000
2018	18470000000
2019	18988000000
2020	17887000000
2021	19877000000
2022	27429000000
2023	29059000000