Year	constant 2010 US$
2010	3355976968.51778
2011	3967956121.75165
2012	4297490789.30827
2013	4849265347.28423
2014	7427450756.86176
2015	7436487795.05052
2016	8462005477.92801
2017	9610021539.58523
2018	11083352389.0764
