Quarterly Percent
1999-04-01 57.9
2000-04-01 57.5
2001-04-01 57.5
2002-04-01 57.3
2003-04-01 57.3
2004-04-01 56.9
2005-01-01 58.2
2005-04-01 58.3
2005-07-01 58.5
2005-10-01 58.6
2006-01-01 58.6
2006-04-01 58.7
2006-07-01 59.1
2006-10-01 59.4
2007-01-01 58.5
2007-04-01 58.9
2007-07-01 59.5
2007-10-01 59.6
2008-01-01 58.9
2008-04-01 58.7
2008-07-01 59.7
2008-10-01 59.6
2009-01-01 59.1
2009-04-01 59.1
2009-07-01 59.4
2009-10-01 60.1
2010-01-01 59.3
2010-04-01 59.2
2010-07-01 59.4
2010-10-01 59.6
2011-01-01 59.6
2011-04-01 60
2011-07-01 60.4
2011-10-01 60.4
2012-01-01 59.6
2012-04-01 59.9
2012-07-01 60.5
2012-10-01 60.3
2013-01-01 60.1
2013-04-01 60.4
2013-07-01 60.5
2013-10-01 60.4
2014-01-01 60.2
2014-04-01 60.2
2014-07-01 60.7
2014-10-01 60.5
2015-01-01 60.0
2015-04-01 59.9
2015-07-01 60.3
2015-10-01 60.6
2016-01-01 60.8
2016-04-01 60.7
2016-07-01 61.2
2016-10-01 61.3
2017-01-01 60.8
2017-04-01 60.9
2017-07-01 61.5
2017-10-01 61.7
2018-01-01 61.0
2018-04-01 60.9