Quarterly Percent
2006-01-01 73.4
2006-04-01 69.8
2006-07-01 69.5
2006-10-01 72.5
2007-01-01 73.4
2007-04-01 69.8
2007-07-01 71.3
2007-10-01 72.9
2008-01-01 74
2008-04-01 69.5
2008-07-01 69.5
2008-10-01 72.1
2009-01-01 72.3
2009-04-01 69.6
2009-07-01 69.3
2009-10-01 69.2
2010-01-01 70
2010-04-01 67.6
2010-07-01 68.4
2010-10-01 69.5
2011-01-01 69
2011-04-01 66.3
2011-07-01 66
2011-10-01 67.6
2012-01-01 69
2012-04-01 66
2012-07-01 66.3
2012-10-01 66.2
2013-01-01 68.5
2013-04-01 65.8
2013-07-01 66.4
2013-10-01 67.3
2014-01-01 68.9
2014-04-01 65.3
2014-07-01 65.9
2014-10-01 66.3
2015-01-01 67.7
2015-04-01 64.6
2015-07-01 65.5
2015-10-01 65.8
2016-01-01 65.3
2016-04-01 63.3
2016-07-01 64.3
2016-10-01 64.5
2017-01-01 64.5
2017-04-01 63.4
2017-07-01 62.5
2017-10-01 62.3
2018-01-01 63.5
2018-04-01 61.6
