Quarter	Billions of US Dollars
2006-04-01	0.5000
2006-07-01	0.5000
2006-10-01	0.8400
2007-01-01	0.8400
2007-04-01	0.8400
2007-07-01	0.8400
2007-10-01	0.8400
2008-01-01	0.8400
2008-04-01	0.8400
2008-07-01	0.8400
2008-10-01	0.8400
2009-01-01	0.8400
2009-04-01	0.8400
2009-07-01	0.8400
2009-10-01	0.8400
2010-01-01	0.8400
2010-04-01	0.8400
2010-07-01	0.8400
2010-10-01	1.5900
2011-01-01	1.5900
2011-04-01	1.5900
2011-07-01	1.8050
2011-10-01	1.3050
2012-01-01	2.8050
2012-04-01	3.3680
2012-07-01	3.5031
2012-10-01	8.7580
2013-01-01	9.6185
2013-04-01	11.7057
2013-07-01	11.7508
2013-10-01	13.5446
2014-01-01	14.1763
2014-04-01	14.7772
2014-07-01	15.1225
2014-10-01	15.4602
2015-01-01	15.5097
2015-04-01	17.8339