Quarterly Percent
1999-04-01 12.8
2000-04-01 11.2
2001-04-01 11.4
2002-04-01 12.4
2003-01-01 15.3
2003-04-01 12
2003-07-01 12.1
2003-10-01 15.7
2004-01-01 16.9
2004-04-01 13.2
2004-07-01 14.1
2004-10-01 16.3
2005-01-01 16.1
2005-04-01 12.3
2005-07-01 13.2
2005-10-01 14.4
2006-01-01 15.2
2006-04-01 10.9
2006-07-01 12
2006-10-01 13.7
2007-01-01 13.8
2007-04-01 11.2
2007-07-01 12.3
2007-10-01 14.3
2008-01-01 15.3
2008-04-01 11.7
2008-07-01 13.2
2008-10-01 15.1
2009-01-01 17
2009-04-01 14.1
2009-07-01 14.3
2009-10-01 16.2
2010-01-01 16.6
2010-04-01 13.2
2010-07-01 15.1
2010-10-01 16.1
2011-01-01 16.4
2011-04-01 12.8
2011-07-01 15.4
2011-10-01 17.3
2012-01-01 17
2012-04-01 12.7
2012-07-01 14.3
2012-10-01 16.5
2013-01-01 16.8
2013-04-01 12.3
2013-07-01 12.6
2013-10-01 15.1
2014-01-01 14.9
2014-04-01 10.4
2014-07-01 11.7
2014-10-01 13.6
2015-01-01 13.3
2015-04-01 9.6
2015-07-01 10.7
2015-10-01 12.9
2016-01-01 12.4
2016-04-01 9.1
2016-07-01 9.6
2016-10-01 11.5
2017-01-01 11.7
2017-04-01 8.9
2017-07-01 11.8
2017-10-01 13.0
2018-01-01 13.6
2018-04-01 11.5