Quarterly Percent
1998-04-01 64.3
1999-01-01 62.3
1999-04-01 64.5
1999-07-01 58.1
1999-10-01 61.5
2000-01-01 62.9
2000-04-01 61.3
2000-07-01 59.2
2000-10-01 61.9
2001-01-01 62.1
2001-04-01 62.8
2001-07-01 54.8
2001-10-01 61.7
2002-01-01 64.1
2002-04-01 62.7
2002-07-01 58.3
2002-10-01 59.4
2003-01-01 63.5
2003-04-01 61.9
2003-07-01 60.9
2003-10-01 59.9
2004-01-01 63
2004-04-01 64.2
2004-07-01 60.2
2004-10-01 62.1
2005-01-01 62.1
2005-04-01 65.2
2005-07-01 60.9
2005-10-01 61.2
2006-01-01 60.9
2006-04-01 64.1
2006-07-01 64.2
2006-10-01 61.2
2007-01-01 64.2
2007-04-01 64.8
2007-07-01 63.2
2007-10-01 63.4
2008-01-01 64.2
2008-04-01 65.6
2008-07-01 62.6
2008-10-01 63.7
2009-01-01 65.9
2009-04-01 65.6
2009-07-01 65.2
2009-10-01 63.8
2010-01-01 67
2010-04-01 65.5
2010-07-01 62.3
2010-10-01 64.4
2011-01-01 66
2011-04-01 68.1
2011-07-01 65.4
2011-10-01 64
2012-01-01 65.4
2012-04-01 65.2
2012-07-01 65.9
2012-10-01 63.7
2013-01-01 67.5
2013-04-01 65.8
2013-07-01 65.3
2013-10-01 66.8
2014-01-01 68.3
2014-04-01 69.4
2014-07-01 66.5
2014-10-01 66.7
2015-01-01 66.5
2015-04-01 68.6
2015-07-01 66.6
2015-10-01 67.1
2016-01-01 69.4
2016-04-01 69.5
2016-07-01 69.6
2016-10-01 68.7
2017-01-01 70.5
2017-04-01 71.0
2017-07-01 65.8
2017-10-01 70.1
2018-01-01 71.7
2018-04-01 69.5