Month	Percent
2012-01-01	23.8
2012-02-01	23.2
2012-03-01	22.5
2012-04-01	23.7
2012-05-01	23.1
2012-06-01	23.2
2012-07-01	24.2
2012-08-01	22.5
2012-09-01	22.4
2012-10-01	22.9
2012-11-01	23.1
2012-12-01	22.8
2013-01-01	22.7
2013-02-01	22.4
2013-03-01	23.1
2013-04-01	22.4
2013-05-01	22.9
2013-06-01	22.6
2013-07-01	23.7
2013-08-01	23.9
2013-09-01	23
2013-10-01	23.2
2013-11-01	23.2
2013-12-01	22.8
2014-01-01	22.1
2014-02-01	21.4
2014-03-01	21.3
2014-04-01	21
2014-05-01	20.4
2014-06-01	21.8
2014-07-01	21.9
2014-08-01	22.8
2014-09-01	21.2
2014-10-01	22.4
2014-11-01	21.8
2014-12-01	21.4
2015-01-01	21.9
2015-02-01	22.5
2015-03-01	22.1
2015-04-01	21.4
2015-05-01	22.3
2015-06-01	22.3
2015-07-01	22.7
2015-08-01	22.4
2015-09-01	21.1
2015-10-01	21.5
2015-11-01	22.0
2015-12-01	21.2
2016-01-01	22.0
2016-02-01	22.0
2016-03-01	21.9
2016-04-01	21.3
2016-05-01	21.4
2016-06-01	21.4
2016-07-01	21.7
2016-08-01	21.7
2016-09-01	20.9
2016-10-01	21.3
2016-11-01	21.1
2016-12-01	20.8
2017-01-01	20.9
2017-02-01	21.5
2017-03-01	21.4
2017-04-01	21.4
2017-05-01	21.0
2017-06-01	21.5
2017-07-01	22.1
2017-08-01	22.4
2017-09-01	20.8
2017-10-01	20.4
2017-11-01	20.9
2017-12-01	20.4
2018-01-01	20.6
2018-02-01	20.3
2018-03-01	21.1
2018-04-01	20.3
2018-05-01	19.7
2018-06-01	20.0
2018-07-01	20.5
2018-08-01	20.6
2018-09-01	20.3