Quarter Billions of US Dollars 2004-01-01 0.45000 2004-04-01 0.45000 2004-07-01 0.45000 2004-10-01 0.45000 2005-07-01 0.68932 2005-10-01 0.74298 2006-01-01 1.27022 2006-04-01 0.60740 2006-07-01 0.47877 2006-10-01 0.60770 2007-01-01 0.60091 2007-04-01 0.71550 2007-07-01 0.23078 2007-10-01 0.62342 2008-01-01 0.70745 2008-04-01 0.66663 2008-07-01 0.61832 2008-10-01 0.52505 2009-01-01 0.50000 2009-04-01 1.00000 2009-07-01 1.00000 2009-10-01 0.50000 2010-01-01 0.51932 2010-04-01 0.86011 2010-07-01 0.91525 2010-10-01 1.00377 2011-01-01 1.01828 2011-04-01 0.20000 2011-07-01 0.97500 2011-10-01 0.87500 2012-01-01 1.07057 2012-04-01 1.05107 2012-07-01 0.35302 2012-10-01 0.29619 2013-01-01 0.10000 2013-04-01 0.10000 2013-07-01 0.03314 2013-10-01 0.03365 2014-01-01 0.03394 2014-04-01 0.03370 2014-10-01 0.30331 2015-01-01 0.46983 2015-04-01 0.48152