Quarterly Percent
1998-04-01 18.1
1999-04-01 17.1
2000-04-01 10.8
2001-01-01 13
2001-04-01 12.7
2001-07-01 11.8
2001-10-01 12.9
2002-01-01 16.1
2002-04-01 13.4
2002-07-01 12.1
2002-10-01 14
2003-01-01 15.4
2003-04-01 15.5
2003-07-01 12.2
2003-10-01 15.3
2004-01-01 20.2
2004-04-01 19.8
2004-07-01 15.1
2004-10-01 17.1
2005-01-01 18.8
2005-04-01 28.1
2005-07-01 20.2
2005-10-01 19.8
2006-01-01 22.9
2006-04-01 26.2
2006-07-01 17.2
2006-10-01 17.4
2007-01-01 21.4
2007-04-01 22.3
2007-07-01 15.2
2007-10-01 16.4
2008-01-01 19.4
2008-04-01 24.6
2008-07-01 16
2008-10-01 18.6
2009-01-01 24.9
2009-04-01 30
2009-07-01 23.8
2009-10-01 26
2010-01-01 29.3
2010-04-01 30.7
2010-07-01 21.3
2010-10-01 22.3
2011-01-01 24.6
2011-04-01 26.9
2011-07-01 19.5
2011-10-01 22.1
2012-01-01 25.8
2012-04-01 28.7
2012-07-01 21.8
2012-10-01 23.6
2013-01-01 27.7
2013-04-01 29.5
2013-07-01 19.7
2013-10-01 22.1
2014-01-01 26.2
2014-04-01 29.5
2014-07-01 19.3
2014-10-01 21.7
2015-01-01 23.8
2015-04-01 26.0
2015-07-01 17.7
2015-10-01 17.1
2016-01-01 24.2
2016-04-01 24.7
2016-07-01 16.3
2016-10-01 16.4
2017-01-01 21.7
2017-04-01 22.9
2017-07-01 15.5
2017-10-01 14.9
2018-01-01 19.0
2018-04-01 22.8