Quarterly Percent
2000-04-01 26.6
2001-04-01 26.5
2002-04-01 26.1
2003-04-01 25.3
2004-04-01 24.8
2005-01-01 24.5
2005-04-01 24.3
2005-07-01 24.6
2005-10-01 24.1
2006-01-01 23.8
2006-04-01 23.6
2006-07-01 23.7
2006-10-01 23.5
2007-01-01 23.7
2007-04-01 23.5
2007-07-01 23.3
2007-10-01 22.9
2008-01-01 23
2008-04-01 22.8
2008-07-01 22.7
2008-10-01 22.4
2009-01-01 22.6
2009-04-01 22.3
2009-07-01 22.4
2009-10-01 22
2010-01-01 22.0
2010-04-01 21.7
2010-07-01 22
2010-10-01 21.6
2011-01-01 21.7
2011-04-01 21.6
2011-07-01 21.8
2011-10-01 21.3
2012-01-01 21.1
2012-04-01 21.0
2012-07-01 21.1
2012-10-01 20.7
2013-01-01 20.8
2013-04-01 20.6
2013-07-01 21.0
2013-10-01 20.7
2014-01-01 20.5
2014-04-01 20.5
2014-07-01 20.7
2014-10-01 20.4
2015-01-01 20.6
2015-04-01 20.4
2015-07-01 20.8
2015-10-01 20.4
2016-01-01 20.6
2016-04-01 20.4
2016-07-01 20.5
2016-10-01 20.3
2017-01-01 20.4
2017-04-01 20.2
2017-07-01 20.3
2017-10-01 20.1
2018-01-01 20.1
2018-04-01 19.8