Year Percent 1995-01-01 1.38 1996-01-01 1.60 1997-01-01 1.36 1998-01-01 1.49 1999-01-01 1.40 2000-01-01 1.42 2001-01-01 1.31 2002-01-01 1.30 2003-01-01 1.46 2004-01-01 1.49 2005-01-01 1.47 2006-01-01 1.53 2007-01-01 1.69 2008-01-01 1.72 2009-01-01 1.75 2010-01-01 2.02 2011-01-01 2.19 2012-01-01 1.98 2013-01-01 2.01 2014-01-01 2.08 2015-01-01 1.99 2016-01-01 2.01