Month	Percent
2012-01-01	57.1
2012-02-01	57.2
2012-03-01	56
2012-04-01	57.7
2012-05-01	58.2
2012-06-01	58.4
2012-07-01	58.2
2012-08-01	57.8
2012-09-01	56.7
2012-10-01	58.1
2012-11-01	56.8
2012-12-01	58.9
2013-01-01	58
2013-02-01	58.8
2013-03-01	59.7
2013-04-01	60.4
2013-05-01	59.5
2013-06-01	60.5
2013-07-01	59.8
2013-08-01	56.7
2013-09-01	58.8
2013-10-01	59.2
2013-11-01	59.2
2013-12-01	59.4
2014-01-01	60.8
2014-02-01	60
2014-03-01	60.4
2014-04-01	58.2
2014-05-01	59.5
2014-06-01	60.1
2014-07-01	59.9
2014-08-01	59.9
2014-09-01	59.2
2014-10-01	60.2
2014-11-01	61.9
2014-12-01	63.1
2015-01-01	62.4
2015-02-01	61.9
2015-03-01	61.8
2015-04-01	59.7
2015-05-01	60.7
2015-06-01	62.3
2015-07-01	62.2
2015-08-01	63.2
2015-09-01	61.2
2015-10-01	61.8
2015-11-01	61.7
2015-12-01	62.5
2016-01-01	63.2
2016-02-01	62.8
2016-03-01	61.8
2016-04-01	62.0
2016-05-01	62.4
2016-06-01	61.4
2016-07-01	58.9
2016-08-01	61.3
2016-09-01	60.1
2016-10-01	60.7
2016-11-01	62.8
2016-12-01	64.1
2017-01-01	62.0
2017-02-01	61.6
2017-03-01	60.6
2017-04-01	59.8
2017-05-01	61.2
2017-06-01	60.3
2017-07-01	60.2
2017-08-01	60.9
2017-09-01	61.1
2017-10-01	61.6
2017-11-01	63.1
2017-12-01	63.9
2018-01-01	62.6
2018-02-01	61.9
2018-03-01	62.0
2018-04-01	60.0
2018-05-01	61.6
2018-06-01	63.2
2018-07-01	62.4
2018-08-01	64.8
2018-09-01	62.6