Month	Percent
2012-01-01	63.2
2012-02-01	63.6
2012-03-01	62.7
2012-04-01	63.4
2012-05-01	63.6
2012-06-01	64
2012-07-01	63.4
2012-08-01	62.4
2012-09-01	61.1
2012-10-01	62
2012-11-01	63.3
2012-12-01	64.6
2013-01-01	64.1
2013-02-01	65.8
2013-03-01	65.7
2013-04-01	65.3
2013-05-01	65.4
2013-06-01	65.1
2013-07-01	64.4
2013-08-01	62.8
2013-09-01	63.7
2013-10-01	63.8
2013-11-01	64.4
2013-12-01	65.1
2014-01-01	65.9
2014-02-01	66.2
2014-03-01	65.8
2014-04-01	64.4
2014-05-01	65
2014-06-01	65.6
2014-07-01	64.8
2014-08-01	64.6
2014-09-01	64.1
2014-10-01	64.2
2014-11-01	64.9
2014-12-01	66.1
2015-01-01	65.9
2015-02-01	66.2
2015-03-01	66.6
2015-04-01	65.4
2015-05-01	66.3
2015-06-01	67.4
2015-07-01	67.7
2015-08-01	67.1
2015-09-01	66.1
2015-10-01	65.5
2015-11-01	65.2
2015-12-01	65.5
2016-01-01	66.2
2016-02-01	66.3
2016-03-01	65.9
2016-04-01	67.0
2016-05-01	67.2
2016-06-01	66.9
2016-07-01	66.0
2016-08-01	67.6
2016-09-01	65.4
2016-10-01	66.2
2016-11-01	66.8
2016-12-01	67.0
2017-01-01	66.6
2017-02-01	66.5
2017-03-01	65.8
2017-04-01	66.2
2017-05-01	66.2
2017-06-01	66.0
2017-07-01	67.0
2017-08-01	66.4
2017-09-01	66.7
2017-10-01	67.3
2017-11-01	68.2
2017-12-01	68.1
2018-01-01	67.7
2018-02-01	67.3
2018-03-01	67.3
2018-04-01	66.1
2018-05-01	67.5
2018-06-01	67.6
2018-07-01	66.5
2018-08-01	68.2
2018-09-01	67.0