Year	current US$
2006	6942411.35196056
2007	-26880268.3453484
2008	-59278911.473361
2009	-68559599.1813611
2010	-37338025.7379213
2011	-52293548.8194314
2012	-75384713.497277
2013	-40790159.8325177
2014	-12579851.8414068
2015	-22958545.9639869
2016	-22265193.7073482
2017	-14121097.0541652
2018	-119625427.044628