Quarter	Billions of US Dollars
2008-04-01	0.02600
2008-07-01	0.02600
2008-10-01	0.02600
2009-01-01	0.02600
2010-07-01	0.01000
2010-10-01	0.01000
2011-01-01	0.01000
2011-04-01	0.01000
2011-07-01	0.01360
2011-10-01	0.01360
2012-01-01	0.01360
2012-04-01	0.01360
2014-04-01	0.00500
2014-07-01	0.01475
2014-10-01	0.06475
2015-01-01	0.18275
2015-04-01	0.18180