Year	constant 2010 US$
2000	29655396618.9857
2001	31271781534.4603
2002	29757867360.2081
2003	28943563068.9207
2004	28379713914.1742
2005	33898829648.8947
2006	27580754226.2679
2007	27062938881.6645
2008	29532899869.961
2009	29140962288.6866
2010	38499869700.9103
2011	40088845253.5761
2012	42316248634.5904
2013	47591000000
2014	46600250975.2926
2015	42236900650.1951
2016	44826788036.4109
2017	50617425227.5683