Year	current US$
1986	301999141.871903
1987	301217893.185602
1988	408253928.387589
1989	457228816.358236
1990	132095702.049225
1991	101050750.438727
1992	118686968.02861
1993	99495704.7055548
1994	146181123.941874
1995	-8626237.47425362
1996	27648133.4396587
1997	3760669.08849198
1998	86951953.2680535
1999	53955186.5129058
2000	38961732.6251615
2001	-28317496.9934469
2002	308518.528321743
2003	69550285.0837766
2004	-78651442.8363984
2005	-226532119.268866
2006	-82213029.7277057
2007	144069526.191522
2008	-101972658.298448
2009	-128687280.073038
2010	-179865132.530768
2011	-406810286.293281
2012	-291027995.247155
2013	-239563447.41669
2014	-275024231.677629
2015	-267137651.370187
2016	-387862867.210326
2017	-276711017.461175