Quarterly Percent
1998-01-01 17.8
1998-04-01 16.7
1998-07-01 16.9
1998-10-01 17.6
1999-01-01 18.1
1999-04-01 18.2
1999-07-01 17.9
1999-10-01 19
2000-01-01 18.6
2000-04-01 17
2000-07-01 16.7
2000-10-01 16.6
2001-01-01 16.9
2001-04-01 15.9
2001-07-01 15.4
2001-10-01 16.8
2002-01-01 17.1
2002-04-01 15.4
2002-07-01 15.2
2002-10-01 15.5
2003-01-01 15.8
2003-04-01 14.5
2003-07-01 14.6
2003-10-01 15.6
2004-01-01 17.2
2004-04-01 16
2004-07-01 15.9
2004-10-01 16.2
2005-01-01 16.2
2005-04-01 15.3
2005-07-01 15.2
2005-10-01 15.1
2006-01-01 14.8
2006-04-01 13.5
2006-07-01 13.1
2006-10-01 13.7
2007-01-01 14.1
2007-04-01 12.8
2007-07-01 12.4
2007-10-01 12.4
2008-01-01 12.4
2008-04-01 11.1
2008-07-01 10.9
2008-10-01 11.8
2009-01-01 13.1
2009-04-01 12.7
2009-07-01 13.2
2009-10-01 14.2
2010-01-01 15.7
2010-04-01 15.4
2010-07-01 16.2
2010-10-01 18.1
2011-01-01 19.7
2011-04-01 20.1
2011-07-01 21.6
2011-10-01 24.7
2012-01-01 26.7
2012-04-01 27.4
2012-07-01 29
2012-10-01 29.8
2013-01-01 31.2
2013-04-01 31.2
2013-07-01 31.3
2013-10-01 31.8
2014-01-01 31.5
2014-04-01 30.4
2014-07-01 29.2
2014-10-01 29.6
2015-01-01 30.6
2015-04-01 28.3
2015-07-01 28.2
2015-10-01 28.4
2016-01-01 29.5
2016-04-01 27.6
2016-07-01 27.2
2016-10-01 28.2
2017-01-01 27.8
2017-04-01 25.5
2017-07-01 25.0
2017-10-01 26.1
2018-01-01 26.2
2018-04-01 23.7
