Quarter	Billions of US Dollars
2007-01-01	0.50
2007-04-01	0.75
2007-07-01	0.75
2007-10-01	0.75
2008-01-01	0.25
2012-01-01	0.35
2012-04-01	0.35
2012-07-01	0.35
2012-10-01	0.35
2013-04-01	0.75
2013-07-01	0.75
2013-10-01	0.75
2014-01-01	0.75
2014-04-01	0.75
2014-07-01	0.75
2014-10-01	0.75
2015-01-01	0.75