Year	Percent
2005-01-01	92.0
2006-01-01	92.1
2007-01-01	92.1
2008-01-01	92.1
2009-01-01	91.7
2010-01-01	91.5
2011-01-01	91.4
2012-01-01	91.4
2013-01-01	91.3
2014-01-01	91.2
2015-01-01	91.3
2016-01-01	91.3