Quarter	Billions of US Dollars
2005-10-01	0.1000
2006-01-01	0.1250
2006-04-01	0.1000
2007-10-01	0.7500
2008-04-01	0.0400
2009-01-01	-0.1250
2011-04-01	-0.1400
2013-04-01	1.0000
2014-04-01	0.8227
2014-10-01	-0.2371
2015-04-01	0.0490