Quarterly Percent
1998-01-01 11.1
1998-04-01 10.8
1998-07-01 14.5
1998-10-01 15.6
1999-01-01 17.4
1999-04-01 16.6
1999-07-01 19.1
1999-10-01 19
2000-01-01 18.5
2000-04-01 17
2000-07-01 18.4
2000-10-01 18.5
2001-01-01 17.8
2001-04-01 16.3
2001-07-01 18.5
2001-10-01 17.6
2002-01-01 17.4
2002-04-01 15.4
2002-07-01 17.8
2002-10-01 16.9
2003-01-01 18
2003-04-01 16.8
2003-07-01 19.4
2003-10-01 20
2004-01-01 20.8
2004-04-01 19.9
2004-07-01 21.6
2004-10-01 21.8
2005-01-01 20.9
2005-04-01 17.9
2005-07-01 18.9
2005-10-01 19.1
2006-01-01 19.5
2006-04-01 17
2006-07-01 18.1
2006-10-01 15.4
2007-01-01 12.1
2007-04-01 10.3
2007-07-01 10.7
2007-10-01 9.8
2008-01-01 10.1
2008-04-01 8.6
2008-07-01 10.3
2008-10-01 10.4
2009-01-01 13
2009-04-01 14.8
2009-07-01 18.3
2009-10-01 20.2
2010-01-01 19.7
2010-04-01 17.9
2010-07-01 18.4
2010-10-01 17.4
2011-01-01 17.3
2011-04-01 18
2011-07-01 18.5
2011-10-01 18.5
2012-01-01 19.4
2012-04-01 19.2
2012-07-01 19.5
2012-10-01 20
2013-01-01 19.2
2013-04-01 17.6
2013-07-01 19.6
2013-10-01 19.5
2014-01-01 16.5
2014-04-01 15.5
2014-07-01 16.3
2014-10-01 15
2015-01-01 13.9
2015-04-01 12.0
2015-07-01 12.9
2015-10-01 11.4
2016-01-01 9.7
2016-04-01 10.0
2016-07-01 11.4
2016-10-01 10.8
2017-01-01 8.5
2017-04-01 8.3
2017-07-01 8.7
2017-10-01 6.3
2018-01-01 6.4
2018-04-01 7.0