Quarterly Percent
1998-04-01 61.4
1999-04-01 63
2000-04-01 64.1
2001-01-01 65.6
2001-04-01 67
2001-07-01 67.7
2001-10-01 66.3
2002-01-01 65.6
2002-04-01 66.8
2002-07-01 67.3
2002-10-01 65.8
2003-01-01 65
2003-04-01 66.4
2003-07-01 66.7
2003-10-01 65
2004-01-01 64.2
2004-04-01 65.4
2004-07-01 66
2004-10-01 64.4
2005-01-01 63.6
2005-04-01 65.5
2005-07-01 66.2
2005-10-01 65.2
2006-01-01 64.4
2006-04-01 65.8
2006-07-01 67.3
2006-10-01 65.9
2007-01-01 65.5
2007-04-01 66.9
2007-07-01 68.1
2007-10-01 66.6
2008-01-01 66
2008-04-01 67.4
2008-07-01 67.9
2008-10-01 65.9
2009-01-01 64.5
2009-04-01 65.2
2009-07-01 65.4
2009-10-01 63.9
2010-01-01 63.1
2010-04-01 64.7
2010-07-01 65.7
2010-10-01 64.4
2011-01-01 64.3
2011-04-01 65.7
2011-07-01 66.5
2011-10-01 65.1
2012-01-01 64.4
2012-04-01 65.8
2012-07-01 66.5
2012-10-01 65.1
2013-01-01 64.5
2013-04-01 66
2013-07-01 66.8
2013-10-01 65.6
2014-01-01 64.9
2014-04-01 66.4
2014-07-01 67.6
2014-10-01 66
2015-01-01 65.5
2015-04-01 66.7
2015-07-01 67.8
2015-10-01 66.6
2016-01-01 65.9
2016-04-01 67.5
2016-07-01 67.9
2016-10-01 66.9
2017-01-01 66.7
2017-04-01 68.1
2017-07-01 68.9
2017-10-01 67.6
2018-01-01 67.4
2018-04-01 68.7