Year	current US$
1990	-37941606.466532394
1998	35278837.838080235
1999	-8204068.212507849
2000	37837762.57277437
2001	-5124137.04006846
2002	-8192737.208187431
2003	28003081.891831364
2004	86309534.92215121
2005	87414037.09383775
2006	-71994659.24082735
2007	130986839.92318726
2008	579271.9559693168
2009	-297852461.8926686
2010	-58402692.03859435
2011	-123283042.46824946
2012	-97135659.74638076
2013	159376346.99863452
2014	66251534.175009474
2015	-35842715.80341322
2016	-35962475.69355912
2017	-9305797.185991306