Quarter	Billions of US Dollars
2006-04-01	0.50000
2006-07-01	0.50000
2006-10-01	0.84000
2007-01-01	0.84000
2007-04-01	0.84000
2007-07-01	0.84000
2007-10-01	0.84000
2008-01-01	0.84000
2008-04-01	0.84000
2008-07-01	0.84000
2008-10-01	0.84000
2009-01-01	0.84000
2009-04-01	0.84000
2009-07-01	0.84000
2009-10-01	0.84000
2010-01-01	0.84000
2010-04-01	0.84000
2010-07-01	0.84000
2010-10-01	1.59000
2011-01-01	1.59000
2011-04-01	1.59000
2011-07-01	1.59000
2011-10-01	1.09000
2012-01-01	1.09000
2012-04-01	1.09000
2012-07-01	1.09000
2012-10-01	2.54000
2013-01-01	2.54000
2013-04-01	2.71320
2013-07-01	3.55404
2013-10-01	4.24383
2014-01-01	4.25795
2014-04-01	4.30916
2014-07-01	4.17067
2014-10-01	4.73933
2015-01-01	5.20917
2015-04-01	5.11331