Year	constant 2010 US$
1994	14805765761.5201
1995	14593573601.7424
1996	15636635492.355
1997	14680587585.0252
1998	14524361167.807
1999	13420474524.9762
2000	13432228490.4671
2001	12746236951.5682
2002	13354463644.9167
2003	14205863138.3174
2004	15089557102.6126
2005	15808219369.0363
2006	16820110720.1673
2007	17743676851.87
2008	18337965864.34
2009	19333841322.6349
2010	20654939478.4276
2011	21809708225.8821
2012	23155174756.3942
2013	24079325724.1137
2014	26496434285.3459
2015	28801119306.4072
2016	31557205076.1014
2017	32316522577.3039
2018	33920643177.3696