Quarterly Percent
1998-01-01 28.0
1998-04-01 28.3
1998-07-01 28.0
1998-10-01 27.7
1999-01-01 28.1
1999-04-01 28.2
1999-07-01 28
1999-10-01 27.9
2000-01-01 28.4
2000-04-01 28.8
2000-07-01 28.7
2000-10-01 28.8
2001-01-01 28.9
2001-04-01 29.3
2001-07-01 29.2
2001-10-01 29.2
2002-01-01 29.7
2002-04-01 29.6
2002-07-01 29.2
2002-10-01 29.1
2003-01-01 29.7
2003-04-01 29.8
2003-07-01 29.8
2003-10-01 29.9
2004-01-01 30.2
2004-04-01 30.1
2004-07-01 29.9
2004-10-01 29.8
2005-01-01 30
2005-04-01 29.8
2005-07-01 29.3
2005-10-01 29.3
2006-01-01 29.5
2006-04-01 29.7
2006-07-01 29.6
2006-10-01 29.8
2007-01-01 30.2
2007-04-01 30.3
2007-07-01 30.1
2007-10-01 30.1
2008-01-01 30.6
2008-04-01 30.4
2008-07-01 30.3
2008-10-01 30.1
2009-01-01 30.4
2009-04-01 30.1
2009-07-01 29.6
2009-10-01 29.6
2010-01-01 30.2
2010-04-01 30
2010-07-01 29.5
2010-10-01 29.6
2011-01-01 29.9
2011-04-01 29.5
2011-07-01 29.2
2011-10-01 29.3
2012-01-01 29.3
2012-04-01 28.7
2012-07-01 27.9
2012-10-01 27.7
2013-01-01 27.7
2013-04-01 27.2
2013-07-01 26.8
2013-10-01 26.7
2014-01-01 26.9
2014-04-01 26.8
2014-07-01 26.3
2014-10-01 25.9
2015-01-01 26.1
2015-04-01 26.1
2015-07-01 25.8
2015-10-01 25.8
2016-01-01 25.7
2016-04-01 25.3
2016-07-01 24.7
2016-10-01 24.3
2017-01-01 24.5
2017-04-01 24.4
2017-07-01 23.7
2017-10-01 23.8
2018-01-01 23.9
2018-04-01 23.6