Year	constant 2010 US$
1996	4277990756.22872
1997	3510325374.4517
1998	4215170597.76713
1999	5397964701.06622
2000	6114184628.71625
2001	6921636811.60165
2002	7656108486.32778
2003	8598994457.6257
2004	9300962470.19567
2005	10020951327.9792
2006	10938260094.4475
2007	12265950482.0456
2008	13836200386.3293
2009	14356051392.9672
2010	14261702926.0201
2011	14661579388.934
2012	14377926886.0572
2013	14530188076.5545
2014	14707532587.236
2015	14913414068.6035
2016	15200090488.0292
2017	15597903700.7247