Quarterly Percent
1999-04-01 61.6
2000-04-01 61.6
2001-04-01 61.1
2002-04-01 60
2003-04-01 58.7
2004-04-01 57.5
2005-01-01 57.9
2005-04-01 58.5
2005-07-01 59
2005-10-01 59.1
2006-01-01 58.3
2006-04-01 59.2
2006-07-01 60
2006-10-01 60.4
2007-01-01 59.3
2007-04-01 60.5
2007-07-01 61.3
2007-10-01 61.2
2008-01-01 60.5
2008-04-01 60.8
2008-07-01 62.4
2008-10-01 61.9
2009-01-01 60.5
2009-04-01 60.4
2009-07-01 60.9
2009-10-01 61.5
2010-01-01 60.5
2010-04-01 60.9
2010-07-01 61.6
2010-10-01 61.8
2011-01-01 61.5
2011-04-01 62.4
2011-07-01 62.9
2011-10-01 63.2
2012-01-01 62
2012-04-01 62.6
2012-07-01 63.4
2012-10-01 63.1
2013-01-01 61.9
2013-04-01 62.9
2013-07-01 63.1
2013-10-01 63.1
2014-01-01 62.2
2014-04-01 62.6
2014-07-01 63.4
2014-10-01 63.1
2015-01-01 62.1
2015-04-01 62.0
2015-07-01 63.0
2015-10-01 63.2
2016-01-01 63.2
2016-04-01 63.2
2016-07-01 64.0
2016-10-01 64.1
2017-01-01 63.3
2017-04-01 63.6
2017-07-01 64.4
2017-10-01 64.4
2018-01-01 63.8
2018-04-01 63.9