Quarterly Percent
1999-01-01 36.6
1999-04-01 36.4
1999-07-01 35.8
1999-10-01 35.4
2000-01-01 35.2
2000-04-01 34.9
2000-07-01 34.3
2000-10-01 34.1
2001-01-01 35.8
2001-04-01 35.6
2001-07-01 35
2001-10-01 34.8
2002-01-01 34.1
2002-04-01 33.6
2002-07-01 33
2002-10-01 32.9
2003-01-01 32.6
2003-04-01 32.2
2003-07-01 31.6
2003-10-01 31.5
2004-01-01 31.5
2004-04-01 31.3
2004-07-01 30.8
2004-10-01 30.7
2005-01-01 30.6
2005-04-01 29.9
2005-07-01 29.8
2005-10-01 29.6
2006-01-01 29.3
2006-04-01 29
2006-07-01 28.8
2006-10-01 28.6
2007-01-01 28.7
2007-04-01 28.3
2007-07-01 28
2007-10-01 28.1
2008-01-01 27.8
2008-04-01 27.3
2008-07-01 27.1
2008-10-01 26.9
2009-01-01 26.8
2009-04-01 26.8
2009-07-01 27
2009-10-01 27.1
2010-01-01 26.8
2010-04-01 26.4
2010-07-01 26.3
2010-10-01 26.4
2011-01-01 26.4
2011-04-01 26
2011-07-01 25.9
2011-10-01 26.1
2012-01-01 25.9
2012-04-01 25.7
2012-07-01 25.5
2012-10-01 25.8
2013-01-01 25.7
2013-04-01 25.8
2013-07-01 25.6
2013-10-01 25.7
2014-01-01 26.1
2014-04-01 25.8
2014-07-01 25.9
2014-10-01 25.5
2015-01-01 25.9
2015-04-01 25.4
2015-07-01 25.7
2015-10-01 25.8
2016-01-01 25.8
2016-04-01 25.6
2016-07-01 25.7
2016-10-01 26.0
2017-01-01 26.2
2017-04-01 26.1
2017-07-01 26.0
2017-10-01 26.1
2018-01-01 26.5
2018-04-01 26.1
2018-07-01 26.2