Quarterly Percent
1999-01-01 67.8
2000-01-01 67.6
2001-01-01 67.7
2002-01-01 67.3
2003-01-01 66.4
2003-04-01 66.6
2003-07-01 63.5
2003-10-01 66.7
2004-01-01 66.7
2004-04-01 66.7
2004-07-01 62.8
2004-10-01 66.4
2005-01-01 68.3
2005-04-01 66.1
2005-07-01 63.1
2005-10-01 65.7
2006-01-01 66.7
2006-04-01 67.2
2006-07-01 63.1
2006-10-01 66.4
2007-01-01 66.4
2007-04-01 66
2007-07-01 62.9
2007-10-01 65.1
2008-01-01 66.3
2008-04-01 66.4
2008-07-01 63.1
2008-10-01 65.3
2009-01-01 64.8
2009-04-01 64.2
2009-07-01 61
2009-10-01 65.3
2010-01-01 65.6
2010-04-01 65.0
2010-07-01 62.8
2010-10-01 66.0
2011-01-01 66.5
2011-04-01 65.7
2011-07-01 63.3
2011-10-01 66.5
2012-01-01 67.2
2012-04-01 66.3
2012-07-01 64.4
2012-10-01 66.1
2013-01-01 66.8
2013-04-01 66.7
2013-07-01 64.4
2013-10-01 66.4
2014-01-01 67.6
2014-04-01 67.2
2014-07-01 65.3
2014-10-01 67.2
2015-01-01 67.0
2015-04-01 67.1
2015-07-01 63.9
2015-10-01 66.5
2016-01-01 67.3
2016-04-01 66.0
2016-07-01 64.0
2016-10-01 66.4
2017-01-01 67.3
2017-04-01 66.7
2017-07-01 65.8
2017-10-01 66.6
2018-01-01 67.0
2018-04-01 66.7