Quarter	Percent, Seasonally Adjusted
2004-01-01	12.0
2004-04-01	12.0
2004-07-01	12.0
2004-10-01	11.9
2005-01-01	11.7
2005-04-01	11.8
2005-07-01	11.5
2005-10-01	11.7
2006-01-01	11.4
2006-04-01	11.2
2006-07-01	11.4
2006-10-01	11.1
2007-01-01	10.9
2007-04-01	10.5
2007-07-01	10.9
2007-10-01	10.9
2008-01-01	10.8
2008-04-01	11.3
2008-07-01	11.8
2008-10-01	12.0
2009-01-01	13.3
2009-04-01	14.3
2009-07-01	14.8
2009-10-01	14.9
2010-01-01	14.6
2010-04-01	15.2
2010-07-01	14.9
2010-10-01	15.4
2011-01-01	15.2
2011-04-01	14.9
2011-07-01	14.8
2011-10-01	14.6
2012-01-01	14.7
2012-04-01	14.6
2012-07-01	14.4
2012-10-01	14.9
2013-01-01	14.9
2013-04-01	14.5
2013-07-01	13.8
2013-10-01	13.7
2014-01-01	13.5
2014-04-01	12.5
2014-07-01	12.7
2014-10-01	12.7
2015-01-01	12.0
2015-04-01	11.7
2015-07-01	11.4
2015-10-01	10.9
2016-01-01	10.9
2016-04-01	10.9
2016-07-01	10.5
2016-10-01	10.1
2017-01-01	9.8
2017-04-01	9.5
2017-07-01	9.4