Year	US Dollars
2000-01-01	-1163100000
2001-01-01	-33400000
2002-01-01	614200000
2003-01-01	1943000000
2004-01-01	3418100000
2005-01-01	2910600000
2006-01-01	1751900000
2007-01-01	2269000000
2008-01-01	888300000
2009-01-01	-4424300000
2010-01-01	-4317600000
2011-01-01	-6087800000
2012-01-01	-10146300000
2013-01-01	-6390400000
2014-01-01	-2691000000
2015-01-01	-12142600000
2016-01-01	-19831100000