Month Percent 2012-01-01 45.9 2012-02-01 46.4 2012-03-01 46.7 2012-04-01 46.6 2012-05-01 47.4 2012-06-01 46.6 2012-07-01 54.2 2012-08-01 51.7 2012-09-01 50.3 2012-10-01 49.8 2012-11-01 49.3 2012-12-01 48.1 2013-01-01 48.7 2013-02-01 47.5 2013-03-01 47.8 2013-04-01 47.3 2013-05-01 48 2013-06-01 47.6 2013-07-01 51.9 2013-08-01 51.1 2013-09-01 47.9 2013-10-01 46.4 2013-11-01 46.5 2013-12-01 47.4 2014-01-01 48.5 2014-02-01 48.4 2014-03-01 48.2 2014-04-01 45.9 2014-05-01 47.9 2014-06-01 50.1 2014-07-01 51.6 2014-08-01 51.2 2014-09-01 49.6 2014-10-01 48.5 2014-11-01 46.1 2014-12-01 46.6 2015-01-01 46.7 2015-02-01 45.6 2015-03-01 46.9 2015-04-01 45.0 2015-05-01 47.2 2015-06-01 48.2 2015-07-01 50.9 2015-08-01 50.5 2015-09-01 47.8 2015-10-01 45.2 2015-11-01 51.1 2015-12-01 50.5 2016-01-01 48.5 2016-02-01 47.1 2016-03-01 47.5 2016-04-01 47.4 2016-05-01 46.6 2016-06-01 48.7 2016-07-01 51.5 2016-08-01 48.1 2016-09-01 48.4 2016-10-01 46.5 2016-11-01 48.0 2016-12-01 47.0 2017-01-01 48.6 2017-02-01 47.0 2017-03-01 47.7 2017-04-01 47.4 2017-05-01 48.0 2017-06-01 48.2 2017-07-01 50.7 2017-08-01 50.8 2017-09-01 46.9 2017-10-01 46.8 2017-11-01 47.1 2017-12-01 47.0 2018-01-01 47.2 2018-02-01 47.2 2018-03-01 46.8 2018-04-01 46.0 2018-05-01 45.7 2018-06-01 46.3 2018-07-01 49.7 2018-08-01 49.1 2018-09-01 47.8