Quarterly Percent
2005-01-01 14.2
2005-04-01 13.6
2005-07-01 13.3
2005-10-01 12.8
2006-01-01 13.3
2006-04-01 12.5
2006-07-01 12.6
2006-10-01 12.1
2007-01-01 12.4
2007-04-01 11.8
2007-07-01 12.1
2007-10-01 11.7
2008-01-01 12.3
2008-04-01 12.5
2008-07-01 13.2
2008-10-01 13.6
2009-01-01 16.0
2009-04-01 16.8
2009-07-01 17.3
2009-10-01 16.8
2010-01-01 17.7
2010-04-01 17.0
2010-07-01 16.7
2010-10-01 16.3
2011-01-01 16.9
2011-04-01 16.3
2011-07-01 16.5
2011-10-01 15.8
2012-01-01 16.7
2012-04-01 16.3
2012-07-01 16.4
2012-10-01 16.1
2013-01-01 17.0
2013-04-01 16.3
2013-07-01 16.2
2013-10-01 15.2
2014-01-01 16.0
2014-04-01 15.0
2014-07-01 15.2
2014-10-01 14.3
2015-01-01 14.7
2015-04-01 14.1
2015-07-01 13.8
2015-10-01 13.1
2016-01-01 13.4
2016-04-01 13.0
2016-07-01 13.0
2016-10-01 12.4
2017-01-01 12.6
2017-04-01 12.0
2017-07-01 12.0