Quarter	Billions of US Dollars
2008-01-01	0.0136
2008-04-01	0.0396
2008-07-01	0.0496
2008-10-01	0.0496
2009-01-01	0.0496
2009-04-01	0.0236
2009-07-01	0.0236
2009-10-01	0.0236
2010-01-01	0.0236
2010-04-01	0.0236
2010-07-01	0.0236
2010-10-01	0.0236
2011-01-01	0.0236
2011-04-01	0.0236
2011-07-01	0.0136
2011-10-01	0.0136
2012-01-01	0.5136
2012-04-01	0.5136
2012-07-01	0.5000
2012-10-01	0.5000
2013-01-01	1.5000
2013-04-01	1.5000
2013-07-01	1.5000
2013-10-01	1.5000
2014-01-01	2.7500
2014-04-01	3.2500
2014-07-01	3.2500
2014-10-01	3.2500
2015-01-01	4.0000
2015-04-01	4.0000