Quarter	Percent, Seasonally Adjusted
2007-01-01	6.1
2007-04-01	6.0
2007-07-01	6.3
2007-10-01	6.4
2008-01-01	6.5
2008-04-01	7.0
2008-07-01	6.9
2008-10-01	6.9
2009-01-01	7.4
2009-04-01	7.6
2009-07-01	8.2
2009-10-01	8.3
2010-01-01	8.6
2010-04-01	8.6
2010-07-01	8.4
2010-10-01	8.4
2011-01-01	8.0
2011-04-01	8.0
2011-07-01	8.7
2011-10-01	9.3
2012-01-01	10.0
2012-04-01	10.7
2012-07-01	10.9
2012-10-01	11.4
2013-01-01	12.0
2013-04-01	12.2