Quarter Billions of US Dollars 1993-07-01 0.07100 1993-10-01 0.06800 1994-01-01 0.05800 1994-04-01 0.05900 1994-07-01 0.04700 1994-10-01 0.05200 1995-01-01 0.05600 1995-04-01 0.01900 1995-07-01 0.02350 1995-10-01 0.02200 1996-01-01 0.01500 1996-10-01 0.11312 1997-01-01 0.15100 1997-04-01 0.13448 1997-07-01 0.22200 1997-10-01 0.20300 1998-01-01 0.20700 1998-04-01 0.20700 1999-04-01 0.03000 1999-07-01 0.15238 1999-10-01 0.16587 2000-01-01 0.27334 2000-04-01 0.27602 2000-07-01 0.14648 2000-10-01 0.16568 2001-01-01 0.06887 2001-04-01 0.29285 2001-07-01 0.26500 2001-10-01 0.22500 2002-01-01 0.22500 2002-04-01 0.60000 2002-07-01 1.13291 2002-10-01 1.16200 2003-01-01 1.15927 2003-04-01 0.56526 2003-07-01 0.02500 2003-10-01 0.09906 2004-01-01 0.14288 2004-04-01 0.15156 2004-07-01 0.15430 2004-10-01 0.15810 2005-01-01 0.28690 2005-04-01 0.27500 2005-07-01 0.27500 2005-10-01 0.15000 2007-04-01 0.40500 2007-07-01 0.40500 2007-10-01 0.64125 2008-01-01 0.81461 2008-04-01 0.40961 2008-07-01 0.40961 2008-10-01 0.17336 2009-01-01 0.18110 2009-04-01 0.18110 2009-07-01 0.18110 2009-10-01 0.18110 2010-07-01 0.50000 2010-10-01 0.50000 2011-01-01 0.50000 2011-04-01 0.67250 2011-07-01 0.17250 2011-10-01 0.34750 2012-01-01 0.34750 2012-04-01 0.17500 2012-07-01 0.17500 2012-10-01 0.05408 2013-01-01 0.05249 2013-04-01 0.95361 2013-07-01 0.95536 2013-10-01 1.33000 2014-01-01 1.33000 2014-04-01 0.43000 2014-07-01 0.43000 2015-01-01 0.12500 2015-04-01 0.49800