Year Percent 1993-01-01 0.208000004 1994-01-01 0.298000008 1995-01-01 0.326999992 1996-01-01 0.423999995 1997-01-01 0.458999991 1998-01-01 0.564999998 1999-01-01 0.652000010 2000-01-01 0.662000000 2001-01-01 0.637000024 2002-01-01 0.759999990 2003-01-01 0.885999978 2004-01-01 0.972000003 2005-01-01 1.133000016 2006-01-01 1.284000039 2007-01-01 1.343999982 2008-01-01 1.345999956 2009-01-01 1.419000030 2010-01-01 1.243000031 2011-01-01 1.067000031 2012-01-01 1.044000030 2013-01-01 0.998000026