Quarter	Percent, Seasonally Adjusted
2012-01-01	13
2012-04-01	14
2012-07-01	15
2012-10-01	16
2013-01-01	14
2013-04-01	11
2013-07-01	10
2013-10-01	8
2014-01-01	11
2014-04-01	8
2014-07-01	7
2014-10-01	9
2015-01-01	2
2015-04-01	3
2015-07-01	2
2015-10-01	2
2016-01-01	2
2016-04-01	4
2016-07-01	3
2016-10-01	3
2017-01-01	6
2017-04-01	6
2017-07-01	6
2017-10-01	6
2018-01-01	7
2018-04-01	8
2018-07-01	6