Quarterly Percent
1998-04-01 29.9
1998-10-01 30.8
1999-04-01 31.6
1999-10-01 31.6
2000-04-01 32.9
2000-10-01 33.1
2001-04-01 32.4
2001-10-01 32.3
2002-01-01 33.3
2002-04-01 30.7
2002-07-01 31.2
2002-10-01 30.6
2003-01-01 31.6
2003-04-01 31.2
2003-07-01 29.5
2003-10-01 32.1
2004-01-01 30.8
2004-04-01 31.3
2004-07-01 30.1
2004-10-01 30.6
2005-01-01 31.2
2005-04-01 30.7
2005-07-01 30.7
2005-10-01 30.8
2006-01-01 30.4
2006-04-01 29.2
2006-07-01 27.7
2006-10-01 28.7
2007-01-01 29.0
2007-04-01 27.9
2007-07-01 26.4
2007-10-01 26.2
2008-01-01 26.1
2008-04-01 25.8
2008-07-01 25.6
2008-10-01 25.9
2009-01-01 25.4
2009-04-01 26.1
2009-07-01 27.0
2009-10-01 27.3
2010-01-01 27.3
2010-04-01 27.0
2010-07-01 26.4
2010-10-01 27.4
2011-01-01 28.0
2011-04-01 26.7
2011-07-01 27.1
2011-10-01 26.9
2012-01-01 26.7
2012-04-01 25.3
2012-07-01 25.1
2012-10-01 25.2
2013-01-01 26.0
2013-04-01 26.7
2013-07-01 25.1
2013-10-01 26.2
2014-01-01 25.1
2014-04-01 25.3
2014-07-01 25.6
2014-10-01 25.7
2015-01-01 25.3
2015-04-01 24.3
2015-07-01 23.8
2015-10-01 23.6
2016-01-01 23.8
2016-04-01 23.5
2016-07-01 23.6
2016-10-01 23.9
2017-01-01 24.0
2017-04-01 23.2
2017-07-01 22.4
2017-10-01 22.5
2018-01-01 22.7
2018-04-01 22.1