Quarter Billions of US Dollars 2007-01-01 0.3500 2007-04-01 0.3500 2007-07-01 0.3500 2007-10-01 0.3500 2008-01-01 0.3500 2008-04-01 0.3500 2008-07-01 0.3500 2008-10-01 0.3500 2009-01-01 0.3500 2009-04-01 0.3500 2009-07-01 0.3500 2009-10-01 0.3500 2010-01-01 0.3500 2010-04-01 0.3500 2010-07-01 0.3500 2010-10-01 0.3500 2011-01-01 0.3500 2011-04-01 0.3500 2011-07-01 0.3500 2011-10-01 0.3500 2014-07-01 0.7000 2014-10-01 1.0000 2015-01-01 1.0000 2015-04-01 2.2931