Quarter	Billions of US Dollars
2004-10-01	0.18670
2008-07-01	0.02000
2009-07-01	1.86660
2009-10-01	0.79997
2010-01-01	0.19330
2010-04-01	0.12800
2010-07-01	0.50000
2011-04-01	-0.12800
2011-10-01	1.19995
2012-01-01	-0.53333
2013-04-01	-0.20000
2013-07-01	0.18000
2014-04-01	-1.86667
2014-10-01	-0.26667
2015-01-01	-0.19333