Quarterly Percent
1998-04-01 32.9
1998-10-01 33.6
1999-04-01 32.4
1999-10-01 31.9
2000-04-01 30.3
2000-10-01 28.1
2001-04-01 28.3
2001-10-01 28.1
2002-01-01 30.6
2002-04-01 28.3
2002-07-01 33.2
2002-10-01 31.0
2003-01-01 30.0
2003-04-01 30.9
2003-07-01 30.6
2003-10-01 30.8
2004-01-01 30.0
2004-04-01 28.9
2004-07-01 31.3
2004-10-01 31.4
2005-01-01 30.7
2005-04-01 30.6
2005-07-01 34.9
2005-10-01 32.7
2006-01-01 33.3
2006-04-01 32.1
2006-07-01 39.6
2006-10-01 36.2
2007-01-01 36.1
2007-04-01 37.7
2007-07-01 39.0
2007-10-01 39.7
2008-01-01 39.6
2008-04-01 38.6
2008-07-01 39.1
2008-10-01 30.8
2009-01-01 29.3
2009-04-01 28.0
2009-07-01 28.1
2009-10-01 24.6
2010-01-01 24.5
2010-04-01 24.9
2010-07-01 27.6
2010-10-01 24.6
2011-01-01 24.4
2011-04-01 25.3
2011-07-01 26.4
2011-10-01 27.2
2012-01-01 27.3
2012-04-01 28.0
2012-07-01 28.1
2012-10-01 31.4
2013-01-01 29.7
2013-04-01 29.6
2013-07-01 30.2
2013-10-01 31.4
2014-01-01 31.8
2014-04-01 30.9
2014-07-01 33.0
2014-10-01 34.3
2015-01-01 34.0
2015-04-01 34.6
2015-07-01 33.5
2015-10-01 36.1
2016-01-01 34.2
2016-04-01 33.0
2016-07-01 32.5
2016-10-01 31.5
2017-01-01 30.6
2017-04-01 35.8
2017-07-01 34.9
2017-10-01 30.6
2018-01-01 31.7
2018-04-01 33.8