Quarterly Percent
1998-04-01 59.8
1998-10-01 59.7
1999-04-01 58.8
1999-10-01 58.4
2000-04-01 57.4
2000-10-01 57.2
2001-04-01 58.1
2001-10-01 58.3
2002-01-01 57.9
2002-04-01 59.6
2002-07-01 61.3
2002-10-01 61.0
2003-01-01 60.3
2003-04-01 60.3
2003-07-01 62.0
2003-10-01 60.4
2004-01-01 60.5
2004-04-01 60.5
2004-07-01 61.9
2004-10-01 61.2
2005-01-01 60.7
2005-04-01 62.1
2005-07-01 62.7
2005-10-01 63.1
2006-01-01 63.5
2006-04-01 65.6
2006-07-01 67.8
2006-10-01 66.7
2007-01-01 65.8
2007-04-01 67.4
2007-07-01 69.4
2007-10-01 69.9
2008-01-01 68.8
2008-04-01 69.1
2008-07-01 68.7
2008-10-01 66.3
2009-01-01 63.7
2009-04-01 60.7
2009-07-01 59.1
2009-10-01 57.9
2010-01-01 57.0
2010-04-01 57.8
2010-07-01 59.8
2010-10-01 59.4
2011-01-01 59.1
2011-04-01 60.5
2011-07-01 61.7
2011-10-01 62.0
2012-01-01 61.1
2012-04-01 62.3
2012-07-01 64.4
2012-10-01 64.1
2013-01-01 64.1
2013-04-01 64.8
2013-07-01 66.0
2013-10-01 65.3
2014-01-01 65.8
2014-04-01 66.6
2014-07-01 66.3
2014-10-01 66.5
2015-01-01 66.9
2015-04-01 68.2
2015-07-01 68.6
2015-10-01 68.7
2016-01-01 68.2
2016-04-01 69.0
2016-07-01 68.9
2016-10-01 68.8
2017-01-01 68.7
2017-04-01 69.8
2017-07-01 70.9
2017-10-01 71.0
2018-01-01 70.9
2018-04-01 71.7