Year	constant 2010 US$
2007	17813604559.6744
2008	17922412634.3898
2009	15796447113.511
2010	15609309515.6304
2011	16232452270.4105
2012	15958287800.1877
2013	15972963191.587
2014	15983511751.6463
2015	15782415665.2306
2016	15765735675.8186
2017	16083405003.5568