Quarterly Percent
2006-01-01 53.3
2006-04-01 50.4
2006-07-01 49.5
2006-10-01 50.8
2007-01-01 52.6
2007-04-01 50
2007-07-01 49.5
2007-10-01 51.6
2008-01-01 52.5
2008-04-01 49.5
2008-07-01 48.7
2008-10-01 50
2009-01-01 51.5
2009-04-01 48.9
2009-07-01 47.6
2009-10-01 48.9
2010-01-01 49.5
2010-04-01 47.4
2010-07-01 47.1
2010-10-01 48.3
2011-01-01 48.4
2011-04-01 46.1
2011-07-01 45.5
2011-10-01 47.2
2012-01-01 48.8
2012-04-01 46.1
2012-07-01 45.8
2012-10-01 45.9
2013-01-01 47
2013-04-01 44.7
2013-07-01 44.8
2013-10-01 46
2014-01-01 46.4
2014-04-01 44.2
2014-07-01 44.1
2014-10-01 44.9
2015-01-01 45.4
2015-04-01 43.5
2015-07-01 43.0
2015-10-01 44.0
2016-01-01 44.4
2016-04-01 42.6
2016-07-01 42.3
2016-10-01 42.9
2017-01-01 43.2
2017-04-01 41.8
2017-07-01 41.1
2017-10-01 42.0
2018-01-01 42.7
2018-04-01 41.5
