Quarterly Percent
1998-04-01 20.4
1999-01-01 21.8
1999-04-01 22.6
1999-07-01 22.2
1999-10-01 17.5
2000-01-01 16.3
2000-04-01 15.2
2000-07-01 21.3
2000-10-01 16.9
2001-01-01 14.8
2001-04-01 15.3
2001-07-01 17.8
2001-10-01 19.6
2002-01-01 17.8
2002-04-01 15.7
2002-07-01 18.9
2002-10-01 18.4
2003-01-01 20.8
2003-04-01 19
2003-07-01 24.5
2003-10-01 22.6
2004-01-01 19.6
2004-04-01 17.5
2004-07-01 25
2004-10-01 22.3
2005-01-01 20.5
2005-04-01 19.9
2005-07-01 23.4
2005-10-01 22.1
2006-01-01 20
2006-04-01 18.9
2006-07-01 23
2006-10-01 20
2007-01-01 18.6
2007-04-01 19.2
2007-07-01 20.3
2007-10-01 17.4
2008-01-01 16.5
2008-04-01 14.3
2008-07-01 22.7
2008-10-01 17.8
2009-01-01 20.8
2009-04-01 19.8
2009-07-01 24
2009-10-01 23
2010-01-01 24.8
2010-04-01 21.1
2010-07-01 22.5
2010-10-01 21.2
2011-01-01 18.7
2011-04-01 16.4
2011-07-01 23
2011-10-01 16.6
2012-01-01 18.8
2012-04-01 16.2
2012-07-01 21.7
2012-10-01 22
2013-01-01 23.3
2013-04-01 22.5
2013-07-01 24.5
2013-10-01 24.4
2014-01-01 26.3
2014-04-01 23.4
2014-07-01 21.3
2014-10-01 22.2
2015-01-01 20.4
2015-04-01 20.4
2015-07-01 22.2
2015-10-01 25.4
2016-01-01 19.8
2016-04-01 19.2
2016-07-01 21.8
2016-10-01 19.7
2017-01-01 21.4
2017-04-01 19.9
2017-07-01 19.1
2017-10-01 16.8
2018-01-01 16.9
2018-04-01 18.0