Quarter	Percent
1998-04-01	11.7093541202673
1999-01-01	10.9000000000000
1999-04-01	10.2000000000000
1999-07-01	10.6000000000000
1999-10-01	9.9000000000000
2000-01-01	8.6000000000000
2000-04-01	8.3000000000000
2000-07-01	9.2000000000000
2000-10-01	8.7000000000000
2001-01-01	7.3000000000000
2001-04-01	6.9000000000000
2001-07-01	7.3000000000000
2001-10-01	8.5000000000000
2002-01-01	8.9000000000000
2002-04-01	7.8000000000000
2002-07-01	9.3000000000000
2002-10-01	8.6000000000000
2003-01-01	8.9000000000000
2003-04-01	8.0000000000000
2003-07-01	9.3000000000000
2003-10-01	9.1000000000000
2004-01-01	9.7000000000000
2004-04-01	8.3000000000000
2004-07-01	10.8000000000000
2004-10-01	9.4000000000000
2005-01-01	9.5000000000000
2005-04-01	9.0000000000000
2005-07-01	10.2000000000000
2005-10-01	9.4000000000000
2006-01-01	9.3000000000000
2006-04-01	9.0000000000000
2006-07-01	9.9000000000000
2006-10-01	9.1000000000000
2007-01-01	9.1000000000000
2007-04-01	8.8000000000000
2007-07-01	8.1000000000000
2007-10-01	7.9000000000000
2008-01-01	7.5000000000000
2008-04-01	6.7000000000000
2008-07-01	8.4000000000000
2008-10-01	7.8000000000000
2009-01-01	8.3000000000000
2009-04-01	7.4000000000000
2009-07-01	8.8000000000000
2009-10-01	8.0000000000000
2010-01-01	8.9000000000000
2010-04-01	8.2000000000000
2010-07-01	9.0000000000000
2010-10-01	8.0000000000000
2011-01-01	6.9000000000000
2011-04-01	6.7000000000000
2011-07-01	8.0000000000000
2011-10-01	7.1000000000000
2012-01-01	7.2000000000000
2012-04-01	7.2000000000000
2012-07-01	7.8000000000000
2012-10-01	7.5000000000000
2013-01-01	8.1000000000000
2013-04-01	8.0000000000000
2013-07-01	8.5000000000000
2013-10-01	8.2000000000000
2014-01-01	8.1000000000000
2014-04-01	7.3000000000000
2014-07-01	8.3000000000000
2014-10-01	8.2000000000000
2015-01-01	8.0000000000000
2015-04-01	7.2000000000000
2015-07-01	7.8000000000000
2015-10-01	8.1000000000000
2016-01-01	7.8000000000000
2016-04-01	8.0000000000000
2016-07-01	7.9000000000000
2016-10-01	6.6000000000000
2017-01-01	8.0000000000000
2017-04-01	7.1000000000000
2017-07-01	6.9000000000000
2017-10-01	6.3000000000000
2018-01-01	5.8000000000000
2018-04-01	5.9000000000000