Quarterly Percent
1998-04-01 28.1
1999-04-01 27.8
2000-04-01 28.4
2001-04-01 26.8
2002-04-01 26.1
2003-04-01 25.9
2004-04-01 26.1
2005-04-01 25.7
2006-04-01 25.3
2007-04-01 25
2008-04-01 23.4
2009-04-01 22.9
2010-01-01 24.7
2010-04-01 25.1
2010-07-01 24.4
2010-10-01 24.7
2011-01-01 23.8
2011-04-01 24.0
2011-07-01 23.9
2011-10-01 23.2
2012-01-01 23.4
2012-04-01 23.5
2012-07-01 22.9
2012-10-01 23.4
2013-01-01 23.0
2013-04-01 23.1
2013-07-01 22.9
2013-10-01 22.7
2014-01-01 22.7
2014-04-01 22.2
2014-07-01 22.1
2014-10-01 20.8
2015-01-01 21.6
2015-04-01 21.7
2015-07-01 21.5
2015-10-01 20.7
2016-01-01 19.9
2016-04-01 21.0
2016-07-01 20.9
2016-10-01 20.2
2017-01-01 20.4
2017-04-01 21.3
2017-07-01 20.6
2017-10-01 20.3
2018-01-01 20.3
2018-04-01 20.7
