Quarterly Percent
1998-04-01 50.5
1998-10-01 50.5
1999-04-01 49.8
1999-10-01 49.4
2000-04-01 48.2
2000-10-01 48.1
2001-04-01 48.8
2001-10-01 48.9
2002-01-01 48.5
2002-04-01 50.0
2002-07-01 51.4
2002-10-01 51.0
2003-01-01 50.1
2003-04-01 50.2
2003-07-01 51.7
2003-10-01 50.5
2004-01-01 50.4
2004-04-01 50.7
2004-07-01 51.3
2004-10-01 51.0
2005-01-01 50.1
2005-04-01 51.5
2005-07-01 52.1
2005-10-01 52.6
2006-01-01 53.2
2006-04-01 54.6
2006-07-01 56.7
2006-10-01 55.3
2007-01-01 54.6
2007-04-01 56.2
2007-07-01 57.8
2007-10-01 57.8
2008-01-01 57.1
2008-04-01 57.8
2008-07-01 57.2
2008-10-01 55.1
2009-01-01 52.8
2009-04-01 50.4
2009-07-01 48.0
2009-10-01 47.1
2010-01-01 46.3
2010-04-01 46.9
2010-07-01 48.4
2010-10-01 48.1
2011-01-01 47.6
2011-04-01 48.9
2011-07-01 49.8
2011-10-01 49.9
2012-01-01 49.2
2012-04-01 50.2
2012-07-01 51.8
2012-10-01 51.7
2013-01-01 51.6
2013-04-01 52.1
2013-07-01 53.1
2013-10-01 52.8
2014-01-01 52.5
2014-04-01 53.1
2014-07-01 53.0
2014-10-01 52.9
2015-01-01 53.2
2015-04-01 54.2
2015-07-01 54.6
2015-10-01 54.6
2016-01-01 54.2
2016-04-01 54.8
2016-07-01 54.8
2016-10-01 54.6
2017-01-01 54.5
2017-04-01 55.3
2017-07-01 56.1
2017-10-01 56.2
2018-01-01 56.1
2018-04-01 56.8