Year	constant 2015 US$
2007	9168422624.736876
2008	9530663535.224796
2009	6912734591.330629
2010	6574508444.107111
2011	6882459497.348387
2012	6533597519.442946
2013	6694565431.583107
2014	6686352954.727446
2015	6554700892.346633
2016	6534910169.432171
2017	6916470595.146114
2018	7332311380.194036
2019	7638899296.908039