Quarterly Percent
1999-04-01 31.7
2000-04-01 31.8
2001-04-01 32.3
2002-04-01 32.3
2003-01-01 27
2003-04-01 27
2003-07-01 27
2003-10-01 27
2004-01-01 23.3
2004-04-01 23.3
2004-07-01 23.3
2004-10-01 23.3
2005-01-01 24.9
2005-04-01 24.9
2005-07-01 24.9
2005-10-01 24.9
2006-01-01 23.3
2006-04-01 23.3
2006-07-01 23.3
2006-10-01 23.3
2007-01-01 22.6
2007-04-01 22.4
2007-07-01 22.4
2007-10-01 22.5
2008-01-01 21.9
2008-04-01 26.2
2008-07-01 22
2008-10-01 25.2
2009-01-01 20.2
2009-04-01 29.6
2009-07-01 28.1
2009-10-01 28.9
2010-01-01 19.4
2010-04-01 19.4
2010-07-01 24
2010-10-01 22
2011-01-01 23.1
2011-04-01 17.2
2011-07-01 22.3
2011-10-01 20.2
2012-01-01 19.1
2012-04-01 19.3
2012-07-01 23.9
2012-10-01 24.6
2013-01-01 18.3
2013-04-01 21
2013-07-01 21.2
2013-10-01 27.2
2014-01-01 24
2014-04-01 19.3
2014-07-01 16.6
2014-10-01 21.5
2015-01-01 28.2
2015-04-01 28.9
2015-07-01 33.6
2015-10-01 25.5
2016-01-01 22.6
2016-04-01 24.6
2016-07-01 26.6
2016-10-01 25.9
2017-01-01 25.7
2017-04-01 23.1
2017-07-01 29.2
2017-10-01 25.2
2018-01-01 27.6
2018-04-01 24.6