Quarter	Percent, Seasonally Adjusted
2005-01-01	59.9
2005-04-01	59.9
2005-07-01	60.0
2005-10-01	60.0
2006-01-01	60.1
2006-04-01	60.1
2006-07-01	60.1
2006-10-01	60.2
2007-01-01	60.2
2007-04-01	60.1
2007-07-01	60.1
2007-10-01	60.2
2008-01-01	60.3
2008-04-01	60.3
2008-07-01	60.3
2008-10-01	60.2
2009-01-01	60.1
2009-04-01	60.1
2009-07-01	60.1
2009-10-01	60.0
2010-01-01	59.9
2010-04-01	60.0
2010-07-01	59.9
2010-10-01	59.7
2011-01-01	59.8
2011-04-01	59.8
2011-07-01	59.8
2011-10-01	59.9
2012-01-01	59.8
2012-04-01	59.9
2012-07-01	59.9
2012-10-01	59.9
2013-01-01	59.8
2013-04-01	59.9
2013-07-01	59.8
2013-10-01	59.8
2014-01-01	59.8
2014-04-01	59.7
2014-07-01	59.7
2014-10-01	59.7
2015-01-01	59.7
2015-04-01	59.7
2015-07-01	59.7
2015-10-01	59.8
2016-01-01	59.9
2016-04-01	59.9
2016-07-01	60.0
2016-10-01	60.0
2017-01-01	60.1
2017-04-01	60.0