Year	current US$
2006	-7538993.33404796
2007	-42218598.1426212
2008	-76321061.6193111
2009	-78414256.0929839
2010	-56170461.5847019
2011	-71241763.3514212
2012	-91239079.1150876
2013	-58965520.3378575
2014	-31358401.1992158
2015	-42534955.419926
2016	-43209053.0259857
2017	-33636791.981132
2018	-140550926.773028