Quarterly Percent
1998-04-01 16.1
1998-10-01 18.0
1999-04-01 17.9
1999-10-01 17.7
2000-04-01 17.3
2000-10-01 16.2
2001-04-01 16.4
2001-10-01 17.7
2002-01-01 20.1
2002-04-01 16.8
2002-07-01 19.4
2002-10-01 15.8
2003-01-01 17.6
2003-04-01 16.8
2003-07-01 16.0
2003-10-01 18.6
2004-01-01 17.2
2004-04-01 18.6
2004-07-01 16.5
2004-10-01 17.3
2005-01-01 18.2
2005-04-01 18.2
2005-07-01 19.5
2005-10-01 18.0
2006-01-01 19.1
2006-04-01 16.7
2006-07-01 18.1
2006-10-01 17.2
2007-01-01 19.3
2007-04-01 18.6
2007-07-01 16.1
2007-10-01 15.0
2008-01-01 15.4
2008-04-01 14.8
2008-07-01 14.4
2008-10-01 13.1
2009-01-01 12.8
2009-04-01 14.5
2009-07-01 15.5
2009-10-01 13.7
2010-01-01 14.8
2010-04-01 13.8
2010-07-01 13.4
2010-10-01 12.7
2011-01-01 14.8
2011-04-01 14.6
2011-07-01 13.6
2011-10-01 15.6
2012-01-01 15.0
2012-04-01 14.3
2012-07-01 13.5
2012-10-01 14.2
2013-01-01 14.5
2013-04-01 15.2
2013-07-01 14.5
2013-10-01 16.6
2014-01-01 15.0
2014-04-01 15.2
2014-07-01 16.1
2014-10-01 17.7
2015-01-01 17.0
2015-04-01 15.4
2015-07-01 13.9
2015-10-01 15.3
2016-01-01 14.7
2016-04-01 15.3
2016-07-01 13.7
2016-10-01 14.2
2017-01-01 15.0
2017-04-01 16.3
2017-07-01 13.7
2017-10-01 13.3
2018-01-01 13.9
2018-04-01 14.3
