Quarterly Percent
1998-01-01 29.7
1998-04-01 30.5
1998-07-01 32.3
1998-10-01 30.4
1999-01-01 29.4
1999-04-01 30.3
1999-07-01 31.7
1999-10-01 29.7
2000-01-01 29.7
2000-04-01 30.2
2000-07-01 31.8
2000-10-01 31.3
2001-01-01 29.7
2001-04-01 30.2
2001-07-01 31.7
2001-10-01 30.2
2002-01-01 29.2
2002-04-01 30.2
2002-07-01 31.9
2002-10-01 30
2003-01-01 29.1
2003-04-01 29.8
2003-07-01 30.9
2003-10-01 29
2004-01-01 32.8
2004-04-01 32.7
2004-07-01 32.8
2004-10-01 30.7
2005-01-01 30.7
2005-04-01 31.4
2005-07-01 30.4
2005-10-01 29.2
2006-01-01 30.2
2006-04-01 31.4
2006-07-01 30.8
2006-10-01 29
2007-01-01 28.5
2007-04-01 30.2
2007-07-01 30.8
2007-10-01 28
2008-01-01 28.5
2008-04-01 30.7
2008-07-01 29.9
2008-10-01 27
2009-01-01 25.9
2009-04-01 25.8
2009-07-01 27.1
2009-10-01 24.9
2010-01-01 24.5
2010-04-01 23.9
2010-07-01 23.9
2010-10-01 23.7
2011-01-01 23.4
2011-04-01 22.5
2011-07-01 22.9
2011-10-01 22.3
2012-01-01 22.2
2012-04-01 22.1
2012-07-01 22.6
2012-10-01 20.3
2013-01-01 18.2
2013-04-01 19.1
2013-07-01 19.2
2013-10-01 18.3
2014-01-01 16.9
2014-04-01 17.8
2014-07-01 19.6
2014-10-01 18.5
2015-01-01 17.1
2015-04-01 17.7
2015-07-01 20.5
2015-10-01 19.2
2016-01-01 17.5
2016-04-01 19.5
2016-07-01 20.5
2016-10-01 19.3
2017-01-01 18.9
2017-04-01 19.2
2017-07-01 21.6
2017-10-01 20.7
2018-01-01 20.4
2018-04-01 20.9
