Quarterly Percent
1999-04-01 44.4
2000-04-01 44.8
2001-04-01 45.5
2002-04-01 45.3
2003-04-01 45.1
2004-04-01 44.5
2005-01-01 45.5
2005-04-01 45.3
2005-07-01 45.5
2005-10-01 45.9
2006-01-01 46.1
2006-04-01 46.6
2006-07-01 47
2006-10-01 47.1
2007-01-01 47
2007-04-01 47.6
2007-07-01 48.1
2007-10-01 48.5
2008-01-01 47.9
2008-04-01 47.8
2008-07-01 48.9
2008-10-01 49.4
2009-01-01 48.4
2009-04-01 48.8
2009-07-01 48.8
2009-10-01 50.2
2010-01-01 49.1
2010-04-01 49.5
2010-07-01 49.7
2010-10-01 50.1
2011-01-01 50.2
2011-04-01 50.9
2011-07-01 51.4
2011-10-01 51.5
2012-01-01 50.7
2012-04-01 51.1
2012-07-01 51.5
2012-10-01 51.6
2013-01-01 51.6
2013-04-01 51.9
2013-07-01 52.1
2013-10-01 52
2014-01-01 51.9
2014-04-01 52.2
2014-07-01 52.5
2014-10-01 52.4
2015-01-01 52.1
2015-04-01 52.3
2015-07-01 52.5
2015-10-01 52.7
2016-01-01 53.2
2016-04-01 53.2
2016-07-01 53.7
2016-10-01 54.1
2017-01-01 53.5
2017-04-01 53.7
2017-07-01 54.2
2017-10-01 54.7
2018-01-01 53.9
2018-04-01 53.9