Quarter Billions of US Dollars 2008-01-01 0.01360 2008-04-01 0.03960 2008-07-01 0.04960 2008-10-01 0.04960 2009-01-01 0.04960 2009-04-01 0.02360 2009-07-01 0.02360 2009-10-01 0.02360 2010-01-01 0.02360 2010-04-01 0.02360 2010-07-01 0.02360 2010-10-01 0.02360 2011-01-01 0.02360 2011-04-01 0.02360 2011-07-01 0.01360 2011-10-01 0.01360 2012-01-01 0.01360 2012-04-01 0.01360 2014-04-01 0.86620 2014-07-01 0.87595 2014-10-01 0.92595 2015-01-01 1.04395 2015-04-01 1.04300