Quarterly Percent
2000-04-01 19.1
2001-04-01 17.9
2002-04-01 18.2
2003-04-01 18.1
2004-04-01 18.6
2005-01-01 18.8
2005-04-01 18.5
2005-07-01 19.1
2005-10-01 18.5
2006-01-01 18.1
2006-04-01 17.4
2006-07-01 18
2006-10-01 17.3
2007-01-01 16.6
2007-04-01 15.8
2007-07-01 15.9
2007-10-01 15.1
2008-01-01 14.9
2008-04-01 15.3
2008-07-01 15.9
2008-10-01 16.1
2009-01-01 17.6
2009-04-01 18.3
2009-07-01 19.6
2009-10-01 18.9
2010-01-01 19.6
2010-04-01 20.0
2010-07-01 20.4
2010-10-01 20.5
2011-01-01 21.0
2011-04-01 20.4
2011-07-01 21.1
2011-10-01 21.3
2012-01-01 22.1
2012-04-01 21.6
2012-07-01 22.6
2012-10-01 23.0
2013-01-01 23.3
2013-04-01 22.5
2013-07-01 22.9
2013-10-01 22.8
2014-01-01 22.9
2014-04-01 20.8
2014-07-01 21.2
2014-10-01 20.8
2015-01-01 20.4
2015-04-01 19.3
2015-07-01 19.5
2015-10-01 18.8
2016-01-01 18.5
2016-04-01 17.7
2016-07-01 18.1
2016-10-01 17.1
2017-01-01 16.7
2017-04-01 16.0
2017-07-01 16.0
2017-10-01 15.7
2018-01-01 15.3
2018-04-01 14.2
