Year	Percent
1993-01-01	1.4579300000000000
1994-01-01	1.6787000000000000
1995-01-01	1.4448299999999998
1996-01-01	1.4729000000000000
1997-01-01	1.6653900000000001
1998-01-01	1.7409400000000002
1999-01-01	1.7764300000000000
2000-01-01	1.7389000000000000
2001-01-01	1.7542799999999998
2002-01-01	1.7620300000000000
2003-01-01	1.9755300000000000
2004-01-01	1.9132600000000000
2005-01-01	1.8785000000000000
2006-01-01	2.0012500000000000
2007-01-01	1.9141000000000000
2008-01-01	1.9113400000000000
2009-01-01	1.9739799999999998
2010-01-01	1.9416400000000003
2011-01-01	1.8651200000000001
2012-01-01	1.8178000000000000
2013-01-01	1.8791900000000001
2014-01-01	1.8243400000000000
2015-01-01	1.8127799999999998
2016-01-01	1.7112400000000000