Quarterly Percent
1998-01-01 26.1
1998-04-01 35.3
1998-07-01 17.3
1998-10-01 20.4
1999-01-01 22.7
1999-04-01 29.7
1999-07-01 16.8
1999-10-01 17.5
2000-01-01 23.5
2000-04-01 29.2
2000-07-01 15.1
2000-10-01 17.3
2001-01-01 20.6
2001-04-01 27.5
2001-07-01 14.4
2001-10-01 15.5
2002-01-01 22.8
2002-04-01 27.8
2002-07-01 14.2
2002-10-01 17.3
2003-01-01 21.3
2003-04-01 27.9
2003-07-01 16.7
2003-10-01 18.9
2004-01-01 20
2004-04-01 27.2
2004-07-01 13.7
2004-10-01 14.7
2005-01-01 20.8
2005-04-01 26.1
2005-07-01 13.5
2005-10-01 16.5
2006-01-01 19.1
2006-04-01 25.3
2006-07-01 12.5
2006-10-01 15.6
2007-01-01 20
2007-04-01 22.2
2007-07-01 10.6
2007-10-01 13.1
2008-01-01 16.8
2008-04-01 21
2008-07-01 11.2
2008-10-01 13.1
2009-01-01 14.7
2009-04-01 25.5
2009-07-01 15.4
2009-10-01 18.4
2010-01-01 20.9
2010-04-01 25.4
2010-07-01 13.2
2010-10-01 15.3
2011-01-01 22.2
2011-04-01 23.9
2011-07-01 12.5
2011-10-01 14
2012-01-01 19.8
2012-04-01 22.7
2012-07-01 13.7
2012-10-01 15.1
2013-01-01 18.8
2013-04-01 22.5
2013-07-01 11.1
2013-10-01 14.5
2014-01-01 20.8
2014-04-01 23.7
2014-07-01 11
2014-10-01 17.1
2015-01-01 21.0
2015-04-01 25.5
2015-07-01 14.5
2015-10-01 16.7
2016-01-01 20.4
2016-04-01 25.4
2016-07-01 13.1
2016-10-01 14.2
2017-01-01 22.9
2017-04-01 26.9
2017-07-01 13.2
2017-10-01 12.9
2018-01-01 20.9
2018-04-01 21.4
