Quarterly Percent
1999-04-01 46.4
2000-01-01 44.9
2000-04-01 46.5
2000-07-01 46.2
2000-10-01 45.6
2001-01-01 45.2
2001-04-01 45.4
2001-07-01 47.7
2001-10-01 46.5
2002-01-01 45.3
2002-04-01 46.7
2002-07-01 47
2002-10-01 48.1
2003-01-01 47.4
2003-04-01 47
2003-07-01 48.2
2003-10-01 48.5
2004-01-01 48.7
2004-04-01 48.6
2004-07-01 47.9
2004-10-01 48
2005-01-01 49.4
2005-04-01 50.7
2005-07-01 49.4
2005-10-01 50.2
2006-01-01 51.2
2006-04-01 52.3
2006-07-01 51.6
2006-10-01 51.8
2007-01-01 51.4
2007-04-01 52.6
2007-07-01 52.5
2007-10-01 51.6
2008-01-01 51.4
2008-04-01 51.6
2008-07-01 52.6
2008-10-01 52.2
2009-01-01 50.4
2009-04-01 49
2009-07-01 48.5
2009-10-01 48.3
2010-01-01 47.6
2010-04-01 47.7
2010-07-01 46.6
2010-10-01 47.4
2011-01-01 47.6
2011-04-01 49.1
2011-07-01 50.6
2011-10-01 49.6
2012-01-01 50.1
2012-04-01 51.2
2012-07-01 50.6
2012-10-01 49.5
2013-01-01 50
2013-04-01 51.8
2013-07-01 51.1
2013-10-01 50.6
2014-01-01 49.1
2014-04-01 51.2
2014-07-01 52
2014-10-01 51.2
2015-01-01 51.4
2015-04-01 52.3
2015-07-01 53.6
2015-10-01 52.7
2016-01-01 52.1
2016-04-01 54.6
2016-07-01 53.1
2016-10-01 52.0
2017-01-01 53.1
2017-04-01 53.6
2017-07-01 54.6
2017-10-01 54.9
2018-01-01 53.6
2018-04-01 54.4