Year	US Dollars
1990	-2533622854.91865
1991	-528333333.33333
1992	-2090029154.51895
1993	417336664.10454
1994	-487156036.26531
1995	-18376624.23556
1996	-905000000
1997	-437000000
1998	-45000000
1999	-45000000
2000	421500000
2001	49000000
2002	142000000
2003	678000000
2004	909000000
2005	1315300000
2006	962500000
2007	701000000
2008	765000000
2009	-161944654.4807
2010	1237611001.47217
2011	832661104.55589
2012	-2668584479.08177
2013	-2473488193.31742
2014	-2526000000
2015	-1223600000
2016	-1181300000
2017	-498800000