Year	US Dollars
1986	58052582.75413
1987	18937368.87472
1988	-100187390.6583
1989	31802009.89671
1990	-63106736.4435
1991	-7679081.44316
1992	-39371681.15299
1993	-51329514.18106
1994	-105224303.50195
1995	-125830152.209
1996	-199254059.46215
1997	-124596174.19885
1998	-202286344.23635
1999	-152089161.0748
2000	-132813494.30696
2001	-40789795.35887
2002	-73523063.0699
2003	26584052.09048
2004	-43639369.3554
2005	-9557811.35606
2006	-951211791.20941
2007	-1401818731.3923
2008	-1465283124.35364
2009	-1609247798.72378
2010	-899526020.26898
2011	-1351070624.22432
2012	-1530940470.06419
2013	-2271111550.30016
2014	-2034497550.79497
2015	-2304150707.51231
2016	-4834536621.36087
2017	-6393924321.82382