Year Percent 1993-01-01 0.47916000000000003 1994-01-01 0.41532600000000003 1995-01-01 0.35672900000000000 1996-01-01 0.53602600000000000 1997-01-01 0.64220700000000000 1998-01-01 0.80769000000000000 1999-01-01 0.98965500000000000 2000-01-01 1.19210000000000000 2001-01-01 1.34275000000000000 2002-01-01 1.39322000000000010 2003-01-01 1.36121000000000000 2004-01-01 1.39707999999999990 2005-01-01 1.45106000000000000 2006-01-01 1.50755000000000000 2007-01-01 1.52106000000000000 2008-01-01 1.61248000000000000 2009-01-01 1.61286000000000000 2010-01-01 1.60607000000000000 2011-01-01 1.55937000000000010 2012-01-01 1.53990000000000000 2013-01-01 1.58954000000000000 2014-01-01 1.55108999999999990 2015-01-01 1.34011000000000010 2016-01-01 1.18232000000000000