Quarter Billions of US Dollars 1994-04-01 0.15526 1994-07-01 0.15530 1994-10-01 0.15508 1995-01-01 0.15518 1995-04-01 0.15508 1995-07-01 0.15520 1995-10-01 0.15520 1996-01-01 0.15516 1996-04-01 0.15504 1996-07-01 0.15518 1996-10-01 0.15512 1997-01-01 0.15484 1997-04-01 0.15490 1997-07-01 0.15508 1997-10-01 0.15492 1998-01-01 0.15486 1998-04-01 0.15496 1998-07-01 0.15494 1998-10-01 0.15492 1999-01-01 0.15486 1999-04-01 0.15472 1999-07-01 0.15452 1999-10-01 0.15442 2000-01-01 0.15412 2000-04-01 0.15396 2000-07-01 0.15393 2000-10-01 0.15393 2001-01-01 0.15391 2001-04-01 0.07695 2001-07-01 0.07693 2001-10-01 0.07695 2002-01-01 0.07693 2003-07-01 0.12000 2003-10-01 0.12000 2004-01-01 0.12000 2004-04-01 0.12000 2004-07-01 0.12000 2004-10-01 0.12000 2005-01-01 0.12000 2005-04-01 0.12000 2005-07-01 0.12000 2005-10-01 0.72000 2006-01-01 0.72000 2006-04-01 0.72000 2006-07-01 0.72000 2006-10-01 0.72000 2007-01-01 0.72000 2007-04-01 0.72000 2007-07-01 0.72000 2007-10-01 0.72000 2008-01-01 0.72000 2008-04-01 0.72000 2008-07-01 0.60000 2008-10-01 0.60000 2009-01-01 0.60000 2009-04-01 0.60000 2009-07-01 0.60000 2009-10-01 0.60000 2010-01-01 0.35000 2010-04-01 0.60000 2010-07-01 0.72884 2010-10-01 0.12887 2011-01-01 0.43375 2011-04-01 0.43779 2011-07-01 0.44330 2011-10-01 0.44643 2012-01-01 0.28791 2012-04-01 0.28729 2012-07-01 0.33915 2012-10-01 0.48231 2013-01-01 1.29279 2013-04-01 1.28764 2013-07-01 1.16762 2013-10-01 1.13232 2014-01-01 1.09753 2014-04-01 1.18419 2014-07-01 1.52045 2014-10-01 1.44602 2015-01-01 1.44596 2015-04-01 1.37203