Quarterly Percent
2006-01-01 46.7
2006-04-01 49.6
2006-07-01 50.5
2006-10-01 49.2
2007-01-01 47.4
2007-04-01 50
2007-07-01 50.5
2007-10-01 48.4
2008-01-01 47.5
2008-04-01 50.5
2008-07-01 51.3
2008-10-01 50
2009-01-01 48.5
2009-04-01 51.1
2009-07-01 52.4
2009-10-01 51.1
2010-01-01 50.5
2010-04-01 52.6
2010-07-01 52.9
2010-10-01 51.7
2011-01-01 51.6
2011-04-01 53.9
2011-07-01 54.5
2011-10-01 52.8
2012-01-01 51.2
2012-04-01 53.9
2012-07-01 54.2
2012-10-01 54.1
2013-01-01 53
2013-04-01 55.3
2013-07-01 55.2
2013-10-01 54
2014-01-01 53.6
2014-04-01 55.8
2014-07-01 55.9
2014-10-01 55.1
2015-01-01 54.6
2015-04-01 56.5
2015-07-01 57.0
2015-10-01 56.0
2016-01-01 55.6
2016-04-01 57.4
2016-07-01 57.7
2016-10-01 57.1
2017-01-01 56.8
2017-04-01 58.2
2017-07-01 58.9
2017-10-01 58.0
2018-01-01 57.3
2018-04-01 58.5
