Year	Percent
1996-01-01	2.1774600000000000
1997-01-01	2.0304800000000000
1998-01-01	2.5564200000000000
1999-01-01	2.5806600000000000
2000-01-01	2.5171900000000003
2001-01-01	2.3990900000000000
2002-01-01	2.5904900000000000
2003-01-01	2.6337099999999998
2004-01-01	2.5770299999999997
2005-01-01	2.3229800000000000
2006-01-01	2.5295700000000000
2007-01-01	2.4978500000000000
2008-01-01	2.1452800000000000
2009-01-01	2.1545400000000003
2010-01-01	2.0367200000000000
2011-01-01	2.1225099999999997
2012-01-01	2.1388900000000000
2013-01-01	2.1128500000000000
2014-01-01	2.1423500000000000
2015-01-01	2.5105900000000000
2016-01-01	2.4545000000000000