Quarterly Percent
1999-04-01 31.9
2000-04-01 30.6
2001-04-01 32.1
2002-04-01 31.2
2003-01-01 29.7
2003-04-01 29.7
2003-07-01 29.7
2003-10-01 29.7
2004-01-01 26.4
2004-04-01 26.4
2004-07-01 26.4
2004-10-01 26.4
2005-01-01 25.5
2005-04-01 25.5
2005-07-01 25.5
2005-10-01 25.5
2006-01-01 25
2006-04-01 25
2006-07-01 25
2006-10-01 25
2007-01-01 21
2007-04-01 16.8
2007-07-01 25.8
2007-10-01 25.6
2008-01-01 22.5
2008-04-01 25.3
2008-07-01 29.2
2008-10-01 31.5
2009-01-01 24.8
2009-04-01 30.8
2009-07-01 29.8
2009-10-01 32.2
2010-01-01 19.5
2010-04-01 22.5
2010-07-01 25.5
2010-10-01 23.1
2011-01-01 25.9
2011-04-01 19.3
2011-07-01 24.9
2011-10-01 23.4
2012-01-01 21.9
2012-04-01 19.8
2012-07-01 28.3
2012-10-01 28.5
2013-01-01 21.8
2013-04-01 22.6
2013-07-01 17.7
2013-10-01 25
2014-01-01 28.7
2014-04-01 19.9
2014-07-01 22.8
2014-10-01 20.6
2015-01-01 35.3
2015-04-01 31.9
2015-07-01 39.3
2015-10-01 30.1
2016-01-01 26.9
2016-04-01 31.1
2016-07-01 38.0
2016-10-01 28.2
2017-01-01 29.7
2017-04-01 22.8
2017-07-01 32.1
2017-10-01 28.5
2018-01-01 29.8
2018-04-01 27.0