Year	current US$
2006	34370562.56052649
2007	1300159.3895246806
2008	-24381902.93884969
2009	-6691615.6387373805
2010	21524817.749368552
2011	23002126.01695491
2012	208722.80751404937
2013	29675907.08763843
2014	43527031.87088185
2015	28782124.899052996
2016	31724216.737510014
2017	38133175.77453
2018	-61887396.03929068