Quarterly Percent
1999-01-01 17.5
2000-01-01 17.3
2000-04-01 17.3
2000-07-01 17.9
2000-10-01 17.9
2001-01-01 18.1
2001-04-01 17.7
2001-07-01 17.9
2001-10-01 18.5
2002-01-01 18.6
2002-04-01 18.3
2002-07-01 18.4
2002-10-01 18.8
2003-01-01 18.7
2003-04-01 18.4
2003-07-01 18.6
2003-10-01 18.7
2004-01-01 18.1
2004-04-01 18.2
2004-07-01 18.3
2004-10-01 17.9
2005-01-01 17.9
2005-04-01 17.6
2005-07-01 17.2
2005-10-01 17
2006-01-01 18.6
2006-04-01 18.5
2006-07-01 17.9
2006-10-01 18.1
2007-01-01 18.9
2007-04-01 18.4
2007-07-01 18.1
2007-10-01 17.8
2008-01-01 18.3
2008-04-01 17.8
2008-07-01 17.1
2008-10-01 16.9
2009-01-01 17.1
2009-04-01 16.6
2009-07-01 16.3
2009-10-01 16.5
2010-01-01 16.2
2010-04-01 15.6
2010-07-01 15.8
2010-10-01 15.8
2011-01-01 15.9
2011-04-01 15.8
2011-07-01 15.8
2011-10-01 15.6
2012-01-01 15.7
2012-04-01 15.4
2012-07-01 15.1
2012-10-01 15.3
2013-01-01 15.9
2013-04-01 15.4
2013-07-01 15
2013-10-01 15.2
2014-01-01 15.1
2014-04-01 15.1
2014-07-01 14.7
2014-10-01 14.7
2015-01-01 14.9
2015-04-01 15.0
2015-07-01 14.8
2015-10-01 14.8
2016-01-01 15.1
2016-04-01 14.9
2016-07-01 15.0
2016-10-01 15.3
2017-01-01 15.1
2017-04-01 14.7
2017-07-01 15.1
2017-10-01 15.4
2018-01-01 15.3
2018-04-01 14.6
