Quarterly Percent
2000-04-01 47.3
2001-04-01 47.9
2002-04-01 48
2003-04-01 48.4
2004-04-01 48.7
2005-01-01 48.9
2005-04-01 49.4
2005-07-01 49.6
2005-10-01 49.6
2006-01-01 49.6
2006-04-01 50.4
2006-07-01 50.7
2006-10-01 50.6
2007-01-01 50.5
2007-04-01 51.2
2007-07-01 51.7
2007-10-01 51.7
2008-01-01 51.4
2008-04-01 51.9
2008-07-01 52.3
2008-10-01 52
2009-01-01 51.3
2009-04-01 51.6
2009-07-01 51.6
2009-10-01 51.5
2010-01-01 50.9
2010-04-01 51.4
2010-07-01 51.6
2010-10-01 51.4
2011-01-01 51.1
2011-04-01 51.7
2011-07-01 51.7
2011-10-01 51.5
2012-01-01 51.2
2012-04-01 51.7
2012-07-01 51.8
2012-10-01 51.6
2013-01-01 51.1
2013-04-01 51.7
2013-07-01 51.9
2013-10-01 51.8
2014-01-01 51.6
2014-04-01 52.2
2014-07-01 52.5
2014-10-01 52.4
2015-01-01 52.2
2015-04-01 52.8
2015-07-01 53.1
2015-10-01 53.0
2016-01-01 53.0
2016-04-01 53.6
2016-07-01 53.9
2016-10-01 53.8
2017-01-01 53.7
2017-04-01 54.5
2017-07-01 54.7
2017-10-01 54.6
2018-01-01 54.4
2018-04-01 55.1