Year	current US$
1992	610061498.5
1993	1386556975
1994	2353307900
1995	3648558300
1996	4404398400
1997	5643387000
1998	5793775900
1999	4834580200
2000	5215631466
2001	6055441621
2002	7545519203
2003	9675158579
2004	12389462055
2005	15488188720
2006	19413061458
2007	24455907377
2008	31267278405
2009	18339928462
2010	23380831638
2011	31780269247
2012	31980761976
2013	34821094940
2014	34359513533.999996
2015	28153620639
2016	27375793630
2017	32258410093
2018	36502247809
2019	35759307932
2020	33359292823.000004