Quarterly Percent
1998-04-01 58.1
1999-04-01 60.4
2000-04-01 61.7
2001-01-01 63
2001-04-01 64.5
2001-07-01 65.2
2001-10-01 63.9
2002-01-01 63.5
2002-04-01 64.4
2002-07-01 65.1
2002-10-01 63.7
2003-01-01 63.2
2003-04-01 64.3
2003-07-01 64.3
2003-10-01 62.8
2004-01-01 62.1
2004-04-01 63.1
2004-07-01 63.8
2004-10-01 62.2
2005-01-01 61.3
2005-04-01 62.7
2005-07-01 63.3
2005-10-01 62.5
2006-01-01 61.6
2006-04-01 62.9
2006-07-01 64.4
2006-10-01 63
2007-01-01 62.6
2007-04-01 64.1
2007-07-01 65.2
2007-10-01 63.7
2008-01-01 63.1
2008-04-01 64.4
2008-07-01 64.8
2008-10-01 63.1
2009-01-01 62.1
2009-04-01 62.9
2009-07-01 62.8
2009-10-01 61.2
2010-01-01 60.3
2010-04-01 61.6
2010-07-01 62.4
2010-10-01 61.1
2011-01-01 61.4
2011-04-01 62.9
2011-07-01 63.6
2011-10-01 62.5
2012-01-01 62.1
2012-04-01 63.4
2012-07-01 63.9
2012-10-01 62.6
2013-01-01 62.1
2013-04-01 63.7
2013-07-01 64.1
2013-10-01 63.2
2014-01-01 62.5
2014-04-01 64
2014-07-01 65.2
2014-10-01 63.4
2015-01-01 63.2
2015-04-01 64.5
2015-07-01 65.7
2015-10-01 64.4
2016-01-01 64.1
2016-04-01 65.6
2016-07-01 65.8
2016-10-01 64.8
2017-01-01 64.9
2017-04-01 65.9
2017-07-01 66.5
2017-10-01 65.4
2018-01-01 65.2
2018-04-01 66.7