Month	Percent
2012-01-01	53.1
2012-02-01	53.2
2012-03-01	53.9
2012-04-01	53.4
2012-05-01	54
2012-06-01	54.2
2012-07-01	54.8
2012-08-01	54.6
2012-09-01	54.7
2012-10-01	54.3
2012-11-01	54.2
2012-12-01	54.5
2013-01-01	54.4
2013-02-01	54.4
2013-03-01	54.6
2013-04-01	54.7
2013-05-01	54.7
2013-06-01	55
2013-07-01	54.8
2013-08-01	54.5
2013-09-01	54.5
2013-10-01	54.3
2013-11-01	54.4
2013-12-01	54.9
2014-01-01	55.5
2014-02-01	55.7
2014-03-01	55.9
2014-04-01	55.4
2014-05-01	56.1
2014-06-01	56.4
2014-07-01	55.9
2014-08-01	55.3
2014-09-01	55.7
2014-10-01	55.1
2014-11-01	55.5
2014-12-01	55.9
2015-01-01	55.9
2015-02-01	55.5
2015-03-01	55.9
2015-04-01	56.2
2015-05-01	56.1
2015-06-01	56.1
2015-07-01	55.8
2015-08-01	56.0
2015-09-01	56.0
2015-10-01	55.2
2015-11-01	56.0
2015-12-01	56.6
2016-01-01	56.3
2016-02-01	56.1
2016-03-01	56.4
2016-04-01	56.7
2016-05-01	56.6
2016-06-01	56.6
2016-07-01	56.7
2016-08-01	55.9
2016-09-01	56.2
2016-10-01	56.0
2016-11-01	56.7
2016-12-01	56.9
2017-01-01	57.0
2017-02-01	56.6
2017-03-01	56.8
2017-04-01	56.4
2017-05-01	56.8
2017-06-01	56.7
2017-07-01	56.9
2017-08-01	56.3
2017-09-01	56.5
2017-10-01	56.4
2017-11-01	56.8
2017-12-01	57.2
2018-01-01	57.2
2018-02-01	57.6
2018-03-01	57.5
2018-04-01	57.2
2018-05-01	57.9
2018-06-01	57.8
2018-07-01	57.4
2018-08-01	57.5
2018-09-01	57.1