Quarter	Billions of US Dollars
2003-01-01	0.50000
2003-04-01	0.25000
2008-01-01	-0.15000
2008-04-01	-0.25000
2009-04-01	0.75000
2010-01-01	1.25000
2010-04-01	0.75000
2011-10-01	0.75000
2012-07-01	1.50000
2012-10-01	0.09627
2013-01-01	-0.35000
2013-04-01	0.04929
2013-07-01	1.50000
2014-04-01	-0.75000
2014-07-01	1.25000
2015-04-01	-0.75000
