Quarter Billions of US Dollars 1994-07-01 0.51988 1997-07-01 -0.00191 1998-01-01 -0.00191 1998-07-01 -0.00191 1999-01-01 -0.00191 1999-07-01 -0.00191 2000-01-01 -0.00191 2000-07-01 -0.00191 2001-01-01 -0.00989 2001-07-01 0.49011 2002-01-01 -0.00989 2002-07-01 -0.00989 2003-01-01 0.59011 2003-07-01 -0.00989 2004-01-01 -0.00989 2004-07-01 -0.00989 2005-01-01 -0.00989 2005-04-01 -1.03007 2005-07-01 -0.04653 2006-01-01 0.29011 2006-07-01 -0.02965 2007-01-01 -0.00989 2007-07-01 -0.00989 2008-01-01 -0.00989 2008-07-01 -0.00989 2009-01-01 -0.00989 2009-07-01 -0.00986 2010-04-01 0.75000 2011-07-01 0.50000 2011-10-01 0.25000 2013-01-01 -0.01353 2013-04-01 1.00000 2013-10-01 0.50000 2014-04-01 1.25000 2014-07-01 0.25000 2015-01-01 2.50000 2015-04-01 1.00000