Year	current US$
1992	3559000000
1993	1970000000
1994	2510000000
1995	4803000000
1996	5652000000
1997	7301000000
1998	7070000000
1999	5909000000
2000	7326000000
2001	7451000000
2002	8021000000
2003	9946000000
2004	13774000000
2005	15979000000
2006	19734000000
2007	24275000000
2008	32571000000
2009	21304000000
2010	25284000000
2011	39807000000
2012	46060000000
2013	37558000000
2014	36081000000
2015	26758000000
2016	23414000000
2017	29267000000
2018	33726000000
2019	32955000000
2020	29179000000
2021	39762000000
2022	38220000000
2023	40168000000