Quarterly Percent
1998-04-01 18.8
1999-01-01 17.4
1999-04-01 17.5
1999-07-01 17.9
1999-10-01 18.1
2000-01-01 17.6
2000-04-01 17.2
2000-07-01 17.3
2000-10-01 18.3
2001-01-01 18.4
2001-04-01 19.1
2001-07-01 19.4
2001-10-01 18.3
2002-01-01 18.2
2002-04-01 18.3
2002-07-01 18
2002-10-01 17.8
2003-01-01 18
2003-04-01 18.2
2003-07-01 17.8
2003-10-01 16.8
2004-01-01 16.8
2004-04-01 17.2
2004-07-01 16.5
2004-10-01 16
2005-01-01 15.4
2005-04-01 15.6
2005-07-01 15.2
2005-10-01 15.6
2006-01-01 16.3
2006-04-01 15.5
2006-07-01 15.5
2006-10-01 14.8
2007-01-01 14.7
2007-04-01 14.9
2007-07-01 14.9
2007-10-01 14.3
2008-01-01 13.9
2008-04-01 14.5
2008-07-01 14.1
2008-10-01 14.7
2009-01-01 13.5
2009-04-01 14.9
2009-07-01 14.9
2009-10-01 14.4
2010-01-01 13.2
2010-04-01 14.3
2010-07-01 14.1
2010-10-01 13.1
2011-01-01 15.9
2011-04-01 14.8
2011-07-01 15.2
2011-10-01 15.1
2012-01-01 15.5
2012-04-01 15.4
2012-07-01 14.7
2012-10-01 14.4
2013-01-01 14.9
2013-04-01 14.5
2013-07-01 14.4
2013-10-01 14.8
2014-01-01 14.1
2014-04-01 14.6
2014-07-01 14.3
2014-10-01 14.5
2015-01-01 14.2
2015-04-01 15.4
2015-07-01 15.2
2015-10-01 14.9
2016-01-01 15.1
2016-04-01 15.3
2016-07-01 15.1
2016-10-01 14.0
2017-01-01 15.1
2017-04-01 15.0
2017-07-01 15.6
2017-10-01 14.8
2018-01-01 15.0
2018-04-01 15.4
