Quarterly Percent
1998-01-01 8.3
1998-04-01 7.3
1998-07-01 7.0
1998-10-01 7.6
1999-01-01 8.4
1999-04-01 7.8
1999-07-01 7.9
1999-10-01 8.7
2000-01-01 8.3
2000-04-01 7.6
2000-07-01 7.2
2000-10-01 7.4
2001-01-01 7.6
2001-04-01 7.0
2001-07-01 7.0
2001-10-01 7.8
2002-01-01 7.8
2002-04-01 6.6
2002-07-01 6.4
2002-10-01 6.8
2003-01-01 7.0
2003-04-01 6.1
2003-07-01 5.9
2003-10-01 6.4
2004-01-01 7.6
2004-04-01 6.5
2004-07-01 6.3
2004-10-01 6.6
2005-01-01 6.8
2005-04-01 6.0
2005-07-01 6.3
2005-10-01 6.3
2006-01-01 6.5
2006-04-01 5.7
2006-07-01 5.3
2006-10-01 5.7
2007-01-01 5.9
2007-04-01 5.1
2007-07-01 5.0
2007-10-01 5.3
2008-01-01 5.7
2008-04-01 4.8
2008-07-01 4.8
2008-10-01 5.5
2009-01-01 7.0
2009-04-01 6.6
2009-07-01 6.8
2009-10-01 8.0
2010-01-01 9.3
2010-04-01 9.6
2010-07-01 10
2010-10-01 11.9
2011-01-01 13.7
2011-04-01 14.1
2011-07-01 15.4
2011-10-01 18.3
2012-01-01 20.2
2012-04-01 21.2
2012-07-01 22.1
2012-10-01 23.8
2013-01-01 25.1
2013-04-01 24.5
2013-07-01 24.2
2013-10-01 24.9
2014-01-01 25.2
2014-04-01 23.7
2014-07-01 22.8
2014-10-01 23.4
2015-01-01 23.7
2015-04-01 21.7
2015-07-01 20.8
2015-10-01 21.3
2016-01-01 21.3
2016-04-01 19.5
2016-07-01 19.0
2016-10-01 20.0
2017-01-01 19.9
2017-04-01 17.8
2017-07-01 16.6
2017-10-01 17.5
2018-01-01 17.4
2018-04-01 15.3