Quarterly Percent
1998-04-01 49.8
1998-10-01 50.3
1999-04-01 50.4
1999-10-01 52.1
2000-04-01 55.2
2000-10-01 58.0
2001-04-01 56.6
2001-10-01 60.2
2002-01-01 58.4
2002-04-01 58.3
2002-07-01 52.9
2002-10-01 53.6
2003-01-01 56.8
2003-04-01 54.8
2003-07-01 55.9
2003-10-01 56.4
2004-01-01 56.8
2004-04-01 56.9
2004-07-01 54.9
2004-10-01 55.8
2005-01-01 55.1
2005-04-01 59.0
2005-07-01 54.1
2005-10-01 56.3
2006-01-01 53.5
2006-04-01 55.8
2006-07-01 48.5
2006-10-01 52.2
2007-01-01 51.7
2007-04-01 52.9
2007-07-01 47.4
2007-10-01 51.3
2008-01-01 50.1
2008-04-01 52.1
2008-07-01 48.8
2008-10-01 53.1
2009-01-01 52.5
2009-04-01 53.0
2009-07-01 52.4
2009-10-01 56.5
2010-01-01 54.2
2010-04-01 58.6
2010-07-01 56.8
2010-10-01 61.5
2011-01-01 59.7
2011-04-01 58.0
2011-07-01 57.9
2011-10-01 59.9
2012-01-01 58.2
2012-04-01 56.1
2012-07-01 52.5
2012-10-01 57.2
2013-01-01 56.9
2013-04-01 59.8
2013-07-01 56.8
2013-10-01 56.3
2014-01-01 55.7
2014-04-01 57.0
2014-07-01 51.9
2014-10-01 54.1
2015-01-01 58.2
2015-04-01 54.6
2015-07-01 54.5
2015-10-01 51.7
2016-01-01 57.6
2016-04-01 55.2
2016-07-01 53.9
2016-10-01 60.5
2017-01-01 60.3
2017-04-01 55.1
2017-07-01 53.8
2017-10-01 59.5
2018-01-01 62.6
2018-04-01 60.5