Quarter	Percent, Seasonally Adjusted
2007-01-01	3.9
2007-04-01	3.6
2007-07-01	3.5
2007-10-01	3.4
2008-01-01	3.1
2008-04-01	3.1
2008-07-01	3.0
2008-10-01	3.1
2009-01-01	3.2
2009-04-01	3.6
2009-07-01	3.9
2009-10-01	4.3
2010-01-01	4.5
2010-04-01	4.5
2010-07-01	4.5
2010-10-01	4.4
2011-01-01	4.3
2011-04-01	4.2
2011-07-01	4.4
2011-10-01	4.9
2012-01-01	5.0
2012-04-01	5.2
2012-07-01	5.3
2012-10-01	5.7
2013-01-01	6.2
2013-04-01	6.7