Quarter Billions of US Dollars 2012-07-01 0.10169 2012-10-01 0.10170 2013-01-01 0.57500 2013-04-01 0.57500 2013-07-01 0.57500 2013-10-01 0.57500 2014-01-01 0.57500 2014-04-01 0.57500 2014-07-01 0.57500 2014-10-01 0.57500 2015-01-01 0.57500 2015-04-01 0.57500