Quarterly Percent
1999-04-01 67.4
2000-04-01 66.7
2001-04-01 66.2
2002-04-01 65.7
2003-04-01 65.4
2004-04-01 64.7
2005-01-01 65.8
2005-04-01 66.2
2005-07-01 66.4
2005-10-01 66.2
2006-01-01 66
2006-04-01 66.1
2006-07-01 66.4
2006-10-01 66.8
2007-01-01 65.7
2007-04-01 66
2007-07-01 66.8
2007-10-01 66.5
2008-01-01 66
2008-04-01 65.8
2008-07-01 66.9
2008-10-01 66.5
2009-01-01 66.1
2009-04-01 65.8
2009-07-01 66.3
2009-10-01 66.6
2010-01-01 66.1
2010-04-01 65.8
2010-07-01 66.2
2010-10-01 66.2
2011-01-01 66.1
2011-04-01 66.5
2011-07-01 66.8
2011-10-01 66.8
2012-01-01 66.1
2012-04-01 66.2
2012-07-01 67
2012-10-01 66.5
2013-01-01 66
2013-04-01 66.5
2013-07-01 66.6
2013-10-01 66.5
2014-01-01 66
2014-04-01 66.1
2014-07-01 66.8
2014-10-01 66.4
2015-01-01 65.7
2015-04-01 65.3
2015-07-01 66.1
2015-10-01 66.3
2016-01-01 66.4
2016-04-01 66.2
2016-07-01 66.9
2016-10-01 66.8
2017-01-01 66.3
2017-04-01 66.5
2017-07-01 67.0
2017-10-01 67.0
2018-01-01 66.5
2018-04-01 66.5