Quarterly Percent
1998-04-01 56.2
1998-10-01 54.8
1999-04-01 53.8
1999-10-01 55.0
2000-04-01 53.8
2000-10-01 54.1
2001-04-01 52.4
2001-10-01 53.6
2002-01-01 55.9
2002-04-01 58.3
2002-07-01 57.5
2002-10-01 56.2
2003-01-01 55.9
2003-04-01 52.3
2003-07-01 62.1
2003-10-01 52.1
2004-01-01 63.0
2004-04-01 55.0
2004-07-01 62.0
2004-10-01 57.3
2005-01-01 60.5
2005-04-01 58.5
2005-07-01 61.2
2005-10-01 60.1
2006-01-01 63.6
2006-04-01 63.6
2006-07-01 65.6
2006-10-01 64.5
2007-01-01 65.9
2007-04-01 64.9
2007-07-01 67.5
2007-10-01 72.1
2008-01-01 69.1
2008-04-01 68.7
2008-07-01 68.3
2008-10-01 66.6
2009-01-01 66.2
2009-04-01 68.6
2009-07-01 58.1
2009-10-01 58.2
2010-01-01 55.2
2010-04-01 63.2
2010-07-01 58.2
2010-10-01 57.4
2011-01-01 61.1
2011-04-01 63.2
2011-07-01 62.4
2011-10-01 63.5
2012-01-01 59.9
2012-04-01 65.0
2012-07-01 63.8
2012-10-01 64.0
2013-01-01 60.2
2013-04-01 62.8
2013-07-01 64.0
2013-10-01 61.9
2014-01-01 62.9
2014-04-01 64.0
2014-07-01 62.2
2014-10-01 65.7
2015-01-01 67.0
2015-04-01 66.3
2015-07-01 67.5
2015-10-01 71.2
2016-01-01 69.8
2016-04-01 68.8
2016-07-01 69.4
2016-10-01 69.7
2017-01-01 68.2
2017-04-01 68.5
2017-07-01 68.5
2017-10-01 71.2
2018-01-01 70.9
2018-04-01 73.9