Quarterly Percent
1999-04-01 16.3
1999-07-01 16.1
1999-10-01 15.9
2000-01-01 16.2
2000-04-01 16
2000-07-01 16
2000-10-01 16.2
2001-01-01 16.3
2001-04-01 16.3
2001-07-01 16.5
2001-10-01 16.4
2002-01-01 16.6
2002-04-01 16.2
2002-07-01 16.1
2002-10-01 15.9
2003-01-01 16.3
2003-04-01 16.1
2003-07-01 16.3
2003-10-01 16.2
2004-01-01 16.2
2004-04-01 16.2
2004-07-01 16.5
2004-10-01 16.1
2005-01-01 15.9
2005-04-01 15.9
2005-07-01 15.9
2005-10-01 15.7
2006-01-01 15.3
2006-04-01 15.3
2006-07-01 15.6
2006-10-01 15.6
2007-01-01 15.6
2007-04-01 15.5
2007-07-01 15.5
2007-10-01 15.5
2008-01-01 15.2
2008-04-01 15.1
2008-07-01 15.3
2008-10-01 15.1
2009-01-01 14.7
2009-04-01 15.1
2009-07-01 15
2009-10-01 15
2010-01-01 15.3
2010-04-01 15.1
2010-07-01 15
2010-10-01 15
2011-01-01 14.7
2011-04-01 14.8
2011-07-01 14.8
2011-10-01 14.6
2012-01-01 14.6
2012-04-01 14.6
2012-07-01 14.4
2012-10-01 14.3
2013-01-01 14.2
2013-04-01 14.3
2013-07-01 14.4
2013-10-01 14.4
2014-01-01 13.9
2014-04-01 13.9
2014-07-01 14
2014-10-01 14.2
2015-01-01 14.1
2015-04-01 14.2
2015-07-01 14.3
2015-10-01 14.1
2016-01-01 14.1
2016-04-01 13.9
2016-07-01 13.9
2016-10-01 13.9
2017-01-01 13.7
2017-04-01 13.3
2017-07-01 13.5
2017-10-01 13.3
2018-01-01 13.1
2018-04-01 13.2