Year	constant 2010 US$
2008	19026822283.7268
2009	20016842551.512
2010	26541326135.3128
2011	32990896248.1005
2012	36104325935.6362
2013	40881904872.1058
2014	39422568314.858
2015	30402045373.5949
2016	30653448339.7411
2017	34088950597.8516