Quarterly Percent
2006-01-01 63.5
2006-04-01 67.6
2006-07-01 68.9
2006-10-01 67.5
2007-01-01 64.1
2007-04-01 67.8
2007-07-01 69
2007-10-01 66.4
2008-01-01 64
2008-04-01 68
2008-07-01 68.6
2008-10-01 65.6
2009-01-01 61.5
2009-04-01 64.7
2009-07-01 66.6
2009-10-01 65.4
2010-01-01 63.6
2010-04-01 67.7
2010-07-01 68.2
2010-10-01 67.1
2011-01-01 66.6
2011-04-01 69.8
2011-07-01 71.1
2011-10-01 69.4
2012-01-01 66.1
2012-04-01 69.9
2012-07-01 70.7
2012-10-01 70
2013-01-01 67.4
2013-04-01 70.5
2013-07-01 70.7
2013-10-01 69.2
2014-01-01 67.9
2014-04-01 70.9
2014-07-01 70.5
2014-10-01 68.8
2015-01-01 67.8
2015-04-01 70.7
2015-07-01 71.3
2015-10-01 69.5
2016-01-01 68.6
2016-04-01 71.3
2016-07-01 70.8
2016-10-01 69.5
2017-01-01 68.0
2017-04-01 71.3
2017-07-01 72.6
2017-10-01 71.0
2018-01-01 69.8
2018-04-01 71.7
