Quarterly Percent
2000-04-01 31.5
2001-04-01 31.5
2002-04-01 31.4
2003-04-01 31.1
2004-04-01 30.8
2005-01-01 30.6
2005-04-01 30.3
2005-07-01 30
2005-10-01 30.1
2006-01-01 30.2
2006-04-01 29.9
2006-07-01 29.4
2006-10-01 29.7
2007-01-01 30.1
2007-04-01 29.7
2007-07-01 29.2
2007-10-01 29.5
2008-01-01 29.7
2008-04-01 29.3
2008-07-01 28.9
2008-10-01 29.2
2009-01-01 29.4
2009-04-01 29.1
2009-07-01 29.0
2009-10-01 29.2
2010-01-01 29.3
2010-04-01 29.0
2010-07-01 28.8
2010-10-01 29
2011-01-01 29.2
2011-04-01 28.9
2011-07-01 28.7
2011-10-01 28.7
2012-01-01 28.8
2012-04-01 28.4
2012-07-01 28.0
2012-10-01 28.1
2013-01-01 28.4
2013-04-01 28.0
2013-07-01 27.8
2013-10-01 27.9
2014-01-01 28.0
2014-04-01 27.8
2014-07-01 27.5
2014-10-01 27.5
2015-01-01 27.8
2015-04-01 27.5
2015-07-01 27.3
2015-10-01 27.3
2016-01-01 27.5
2016-04-01 27.1
2016-07-01 26.8
2016-10-01 26.9
2017-01-01 27.1
2017-04-01 26.6
2017-07-01 26.4
2017-10-01 26.5
2018-01-01 26.7
2018-04-01 26.3