Quarterly Percent
1999-04-01 21.7
2000-04-01 20.2
2001-04-01 20.2
2002-04-01 19
2003-01-01 19.6
2003-04-01 19.6
2003-07-01 19.6
2003-10-01 19.6
2004-01-01 17
2004-04-01 17
2004-07-01 17
2004-10-01 17
2005-01-01 16.1
2005-04-01 16.1
2005-07-01 16.1
2005-10-01 16.1
2006-01-01 15.5
2006-04-01 15.5
2006-07-01 15.5
2006-10-01 15.5
2007-01-01 14.7
2007-04-01 16.3
2007-07-01 15.3
2007-10-01 14.7
2008-01-01 17.3
2008-04-01 15.9
2008-07-01 15.7
2008-10-01 17.4
2009-01-01 14.3
2009-04-01 15.8
2009-07-01 14.9
2009-10-01 16
2010-01-01 13.5
2010-04-01 15.9
2010-07-01 13.6
2010-10-01 14.3
2011-01-01 13.1
2011-04-01 14.1
2011-07-01 15.5
2011-10-01 14.9
2012-01-01 13.7
2012-04-01 13.1
2012-07-01 12.1
2012-10-01 13
2013-01-01 12.5
2013-04-01 13.2
2013-07-01 11.9
2013-10-01 12.2
2014-01-01 12.2
2014-04-01 12.2
2014-07-01 12.5
2014-10-01 11
2015-01-01 12.3
2015-04-01 12.1
2015-07-01 12.5
2015-10-01 12.3
2016-01-01 12.9
2016-04-01 13.3
2016-07-01 13.0
2016-10-01 12.1
2017-01-01 12.0
2017-04-01 12.1
2017-07-01 11.7
2017-10-01 12.3
2018-01-01 11.0
2018-04-01 11.7