Year	current US$
1992	533840108.6
1993	896016330.5
1994	1663764531
1995	2546247769
1996	3209360600
1997	4436900000
1998	4787345000
1999	4109848000
2000	4231436875.0000005
2001	4298487183
2002	4811031726
2003	6479205733
2004	8333038884
2005	10208024440
2006	13465221360
2007	15688937093
2008	16061859999
2009	10147073070
2010	12278070970
2011	17477806009
2012	18092471909
2013	18459132233
2014	18295629851
2015	14521364991
2016	14959152222
2017	16673476977.999998
2018	19139918549
2019	18034415188
2020	17341208110