Quarter	Billions of US Dollars
2006-10-01	0.00501
2007-01-01	0.01025
2007-04-01	0.00988
2007-10-01	0.00431
2009-01-01	0.16300
2009-07-01	0.00228
2009-10-01	0.00000
2010-01-01	0.03012
2011-04-01	0.00700
2012-10-01	0.25997
2013-10-01	0.12128
2014-10-01	0.15663
2015-01-01	0.10514
2015-04-01	0.07487