Year	current US$
2008	-31860060.3173254
2009	-45283137.6163212
2010	132093674.376548
2011	35079075.6361403
2012	622606019.871666
2013	265337936.87969
2014	278049342.558513
2015	133915842.367625
2016	813648821.85102
2017	868668648.682249