Quarterly Percent
2006-01-01 50.1
2006-04-01 54.5
2006-07-01 54.5
2006-10-01 53.6
2007-01-01 51.2
2007-04-01 54.7
2007-07-01 54.6
2007-10-01 52.4
2008-01-01 50.8
2008-04-01 55.1
2008-07-01 54.9
2008-10-01 52.9
2009-01-01 50
2009-04-01 53.7
2009-07-01 54
2009-10-01 53.7
2010-01-01 52.8
2010-04-01 56.6
2010-07-01 56.1
2010-10-01 55.9
2011-01-01 55.3
2011-04-01 58.6
2011-07-01 58.6
2011-10-01 57.5
2012-01-01 55.7
2012-04-01 59.5
2012-07-01 58.9
2012-10-01 59.1
2013-01-01 57.7
2013-04-01 60.4
2013-07-01 59.2
2013-10-01 59.1
2014-01-01 57.5
2014-04-01 60
2014-07-01 59
2014-10-01 58.7
2015-01-01 58.1
2015-04-01 60.6
2015-07-01 59.8
2015-10-01 59.7
2016-01-01 59.0
2016-04-01 61.4
2016-07-01 60.0
2016-10-01 59.8
2017-01-01 59.3
2017-04-01 62.0
2017-07-01 61.7
2017-10-01 61.6
2018-01-01 61.0
2018-04-01 62.3
