Month Percent 2012-01-01 14 2012-02-01 14.4 2012-03-01 14.2 2012-04-01 12.9 2012-05-01 12.4 2012-06-01 12.5 2012-07-01 12.9 2012-08-01 12.1 2012-09-01 12.7 2012-10-01 12.5 2012-11-01 13.5 2012-12-01 13.5 2013-01-01 13.8 2013-02-01 13.8 2013-03-01 13.8 2013-04-01 13.4 2013-05-01 14 2013-06-01 13.9 2013-07-01 12.7 2013-08-01 13.1 2013-09-01 13.4 2013-10-01 13.1 2013-11-01 13.5 2013-12-01 13.4 2014-01-01 12.9 2014-02-01 13.1 2014-03-01 13 2014-04-01 13.2 2014-05-01 13.5 2014-06-01 13.8 2014-07-01 14 2014-08-01 13.3 2014-09-01 13.4 2014-10-01 13.3 2014-11-01 12.5 2014-12-01 12.2 2015-01-01 12.8 2015-02-01 12.9 2015-03-01 13.4 2015-04-01 12.7 2015-05-01 12.5 2015-06-01 12.4 2015-07-01 12.8 2015-08-01 13.1 2015-09-01 12.7 2015-10-01 12.5 2015-11-01 12.5 2015-12-01 12.3 2016-01-01 13.4 2016-02-01 13.3 2016-03-01 13.1 2016-04-01 13.2 2016-05-01 12.9 2016-06-01 13.4 2016-07-01 12.2 2016-08-01 12.8 2016-09-01 12.7 2016-10-01 13.4 2016-11-01 13.3 2016-12-01 13.2 2017-01-01 13.4 2017-02-01 12.8 2017-03-01 13.0 2017-04-01 12.5 2017-05-01 12.2 2017-06-01 12.9 2017-07-01 12.9 2017-08-01 13.7 2017-09-01 13.5 2017-10-01 13.6 2017-11-01 12.8 2017-12-01 13.1 2018-01-01 13.9 2018-02-01 13.7 2018-03-01 13.7 2018-04-01 13.0 2018-05-01 12.8 2018-06-01 13.0 2018-07-01 13.1 2018-08-01 13.7 2018-09-01 13.7