Quarter	Billions of US Dollars
2006-04-01	0.30000
2006-07-01	0.30000
2006-10-01	0.60000
2007-01-01	0.84600
2007-04-01	0.84600
2007-07-01	0.84600
2007-10-01	0.69600
2008-01-01	0.57500
2008-04-01	0.27500
2008-07-01	0.27500
2008-10-01	0.52500
2009-01-01	0.40000
2009-04-01	0.40000
2009-07-01	0.40000
2009-10-01	0.20000
2010-01-01	0.20000
2010-04-01	0.34000
2010-07-01	1.02240
2010-10-01	0.82470
2011-01-01	0.86950
2011-04-01	0.94180
2011-07-01	0.21915
2011-10-01	0.20255
2012-01-01	0.20000
2012-10-01	0.10000
2013-01-01	0.10000
2013-04-01	0.20000
2013-07-01	0.20000
2013-10-01	0.10000
2014-01-01	0.10000
2014-07-01	0.75000
2014-10-01	2.80400
2015-01-01	2.88485
2015-04-01	2.70875