Year	Percent
1996-01-01	1.7691500000000000
1997-01-01	1.7137900000000001
1998-01-01	1.6645000000000000
1999-01-01	1.7111900000000002
2000-01-01	1.6536900000000000
2001-01-01	1.6141299999999998
2002-01-01	1.6965800000000000
2003-01-01	1.6750099999999999
2004-01-01	1.5580300000000000
2005-01-01	1.5798700000000000
2006-01-01	1.6027300000000000
2007-01-01	1.5046600000000000
2008-01-01	1.5487500000000000
2009-01-01	1.3365799999999999
2010-01-01	1.3595600000000000
2011-01-01	1.3548000000000000
2012-01-01	1.2959800000000000
2013-01-01	1.2790800000000000
2014-01-01	1.2688000000000000
2015-01-01	1.3188600000000001
2016-01-01	1.3631300000000000