Quarter Billions of US Dollars 2009-10-01 0.7000 2010-01-01 0.7000 2010-04-01 0.7000 2010-07-01 0.8634 2010-10-01 0.1634 2011-01-01 0.1634 2011-04-01 0.1634 2011-07-01 0.3000 2011-10-01 0.3000 2012-01-01 0.4375 2012-04-01 0.5005 2012-07-01 0.3356 2012-10-01 2.3667 2013-01-01 3.0698 2013-04-01 4.9020 2013-07-01 4.8420 2013-10-01 5.4459 2014-01-01 6.3220 2014-04-01 5.3705 2014-07-01 6.5504 2014-10-01 10.2850 2015-01-01 10.1067 2015-04-01 12.8798