Quarterly Percent
1998-04-01 64.4
1998-10-01 62.8
1999-04-01 62.2
1999-10-01 62.5
2000-04-01 61.7
2000-10-01 62.6
2001-04-01 63.2
2001-10-01 62.9
2002-01-01 61.8
2002-04-01 64.8
2002-07-01 63.1
2002-10-01 65.1
2003-01-01 63.4
2003-04-01 64.6
2003-07-01 65.9
2003-10-01 63.8
2004-01-01 65.2
2004-04-01 64.1
2004-07-01 65.4
2004-10-01 65.8
2005-01-01 64.0
2005-04-01 65.3
2005-07-01 64.4
2005-10-01 65.3
2006-01-01 64.8
2006-04-01 67.1
2006-07-01 67.1
2006-10-01 66.6
2007-01-01 66.0
2007-04-01 67.6
2007-07-01 68.2
2007-10-01 69.3
2008-01-01 70.1
2008-04-01 70.8
2008-07-01 70.4
2008-10-01 70.1
2009-01-01 72.0
2009-04-01 70.7
2009-07-01 69.5
2009-10-01 70.6
2010-01-01 70.4
2010-04-01 71.0
2010-07-01 71.6
2010-10-01 70.4
2011-01-01 69.1
2011-04-01 70.5
2011-07-01 70.5
2011-10-01 70.2
2012-01-01 71.3
2012-04-01 72.3
2012-07-01 72.3
2012-10-01 71.9
2013-01-01 71.4
2013-04-01 71.6
2013-07-01 72.7
2013-10-01 70.6
2014-01-01 72.2
2014-04-01 72.1
2014-07-01 71.4
2014-10-01 70.6
2015-01-01 71.7
2015-04-01 72.6
2015-07-01 73.5
2015-10-01 73.4
2016-01-01 73.9
2016-04-01 74.0
2016-07-01 73.7
2016-10-01 74.3
2017-01-01 73.2
2017-04-01 74.0
2017-07-01 75.2
2017-10-01 74.8
2018-01-01 75.1
2018-04-01 75.3