Year	US Dollars
1984	-62857142.85714
1985	-135555548.88889
1986	-72631576.84211
1987	-86228060.09696
1988	-109435417.02805
1989	-141848839.73826
1990	-114164591.59308
1991	-126196448.55287
1992	-113674456.20601
1993	-128865621.36126
1994	-228999999.16396
1995	-248900017.27373
1996	-343999995.22269
1997	-303500005.00008
1998	-145399974.55076
1999	-120816253.61522
2000	-130070000
2001	-179570000
2002	-171420000
2003	-274590000
2004	-384670000
2005	-379290000.00535
2006	-195130000.00039
2007	-506079999.9975
2008	-846040000.00412
2009	-977869999.99272
2010	-994490000.00617
2011	-963500000
2012	-2286090000.00312
2013	-2607340000.00636
2014	-2328699999.99876
2015	-2574997985.50745
2016	-1370833405.80306
2017	-1204254000