Year	current US$
1993	11773556865
1994	14280520006
1995	17177155986.999998
1996	22152027980
1997	22516807371
1998	26419900550
1999	26238509726
2000	28963868723
2001	33318935499
2002	38464844814
2003	48721168476
2004	68952648721
2005	77985130972
2006	95028314176
2007	122751000000
2008	147249000000
2009	113165000000
2010	133013000000
2011	162941000000
2012	157198000000
2013	162320000000
2014	175022000000
2015	157877000000
2016	162692000000
2017	182143000000
2018	202238000000
2019	199128000000
2020	191984000000