Quarterly Percent
1999-04-01 23.5
2000-04-01 23
2001-04-01 22.5
2002-04-01 22
2003-04-01 21.2
2004-04-01 21.2
2005-01-01 20.7
2005-04-01 20.9
2005-07-01 21.1
2005-10-01 20.9
2006-01-01 19.7
2006-04-01 19.7
2006-07-01 19.7
2006-10-01 19.8
2007-01-01 19.4
2007-04-01 19.7
2007-07-01 19.3
2007-10-01 19.2
2008-01-01 19.7
2008-04-01 19.8
2008-07-01 19.4
2008-10-01 19.1
2009-01-01 19.6
2009-04-01 19.2
2009-07-01 19
2009-10-01 18.3
2010-01-01 19.1
2010-04-01 18.5
2010-07-01 18.8
2010-10-01 18.3
2011-01-01 18.4
2011-04-01 17.9
2011-07-01 17.7
2011-10-01 17.4
2012-01-01 18
2012-04-01 17.7
2012-07-01 17.9
2012-10-01 17.4
2013-01-01 17.6
2013-04-01 17.3
2013-07-01 17.5
2013-10-01 17.8
2014-01-01 17.7
2014-04-01 17.3
2014-07-01 17.5
2014-10-01 17.6
2015-01-01 17.5
2015-04-01 17.2
2015-07-01 17.8
2015-10-01 17.5
2016-01-01 17.5
2016-04-01 17.7
2016-07-01 17.3
2016-10-01 17.0
2017-01-01 17.6
2017-04-01 17.9
2017-07-01 17.4
2017-10-01 17.0
2018-01-01 17.3
2018-04-01 17.4
