Year	US Dollars
2000-01-01	-215000000
2001-01-01	325000000
2002-01-01	2833000000
2003-01-01	4070000000
2004-01-01	1811400000
2005-01-01	-1534000000
2006-01-01	-4990000000
2007-01-01	-6878000000
2008-01-01	-13874000000
2009-01-01	-9260500000
2010-01-01	-3946400000
2011-01-01	214000000
2012-01-01	-4658000000
2013-01-01	-2496000000
2014-01-01	-3130000000
2015-01-01	-2709000000
2016-01-01	-4867000000