Month	Percent
2012-01-01	42.9
2012-02-01	42.8
2012-03-01	44
2012-04-01	42.3
2012-05-01	41.8
2012-06-01	41.6
2012-07-01	41.8
2012-08-01	42.2
2012-09-01	43.3
2012-10-01	41.9
2012-11-01	43.2
2012-12-01	41.1
2013-01-01	42
2013-02-01	41.2
2013-03-01	40.3
2013-04-01	39.6
2013-05-01	40.5
2013-06-01	39.5
2013-07-01	40.2
2013-08-01	43.3
2013-09-01	41.2
2013-10-01	40.8
2013-11-01	40.8
2013-12-01	40.6
2014-01-01	39.2
2014-02-01	40
2014-03-01	39.6
2014-04-01	41.8
2014-05-01	40.5
2014-06-01	39.9
2014-07-01	40.1
2014-08-01	40.1
2014-09-01	40.8
2014-10-01	39.8
2014-11-01	38.1
2014-12-01	36.9
2015-01-01	37.6
2015-02-01	38.1
2015-03-01	38.2
2015-04-01	40.3
2015-05-01	39.3
2015-06-01	37.7
2015-07-01	37.8
2015-08-01	36.8
2015-09-01	38.8
2015-10-01	38.2
2015-11-01	38.3
2015-12-01	37.5
2016-01-01	36.8
2016-02-01	37.2
2016-03-01	38.2
2016-04-01	38.0
2016-05-01	37.6
2016-06-01	38.6
2016-07-01	41.1
2016-08-01	38.7
2016-09-01	39.9
2016-10-01	39.3
2016-11-01	37.2
2016-12-01	35.9
2017-01-01	38.0
2017-02-01	38.4
2017-03-01	39.4
2017-04-01	40.2
2017-05-01	38.8
2017-06-01	39.7
2017-07-01	39.8
2017-08-01	39.1
2017-09-01	38.9
2017-10-01	38.4
2017-11-01	36.9
2017-12-01	36.1
2018-01-01	37.4
2018-02-01	38.1
2018-03-01	38.0
2018-04-01	40.0
2018-05-01	38.4
2018-06-01	36.8
2018-07-01	37.6
2018-08-01	35.2
2018-09-01	37.4