Year	constant 2015 US$
2000	3126902848.7893624
2001	3733139512.196793
2002	3688384837.907015
2003	4244379847.3300686
2004	4694477047.595244
2005	5016354810.745142
2006	5249226568.977176
2007	5275612616.847927
2008	6175570604.233018
2009	6435824528.755879
2010	7554564249.846399
2011	7796484898.857293
2012	8958119069.840334
2013	9394262380.680285
2014	9833029748.872131
2015	10275931664.781265
2016	10741525239.197691