Quarterly Percent
1998-04-01 68.0
1999-04-01 67.9
2000-04-01 67.4
2001-04-01 67.8
2002-04-01 67.7
2003-04-01 67.8
2004-04-01 67.3
2005-04-01 67
2006-04-01 67.4
2007-04-01 67.6
2008-04-01 68.2
2009-04-01 68.2
2010-01-01 66.8
2010-04-01 67.0
2010-07-01 67.3
2010-10-01 66.9
2011-01-01 67.3
2011-04-01 67.2
2011-07-01 67.5
2011-10-01 67.8
2012-01-01 67.2
2012-04-01 67.2
2012-07-01 68.0
2012-10-01 67.6
2013-01-01 67.5
2013-04-01 67.3
2013-07-01 67.6
2013-10-01 67.7
2014-01-01 67.5
2014-04-01 67.8
2014-07-01 67.9
2014-10-01 68.5
2015-01-01 68.1
2015-04-01 67.9
2015-07-01 68.1
2015-10-01 68.6
2016-01-01 68.6
2016-04-01 68.3
2016-07-01 68.6
2016-10-01 68.8
2017-01-01 68.4
2017-04-01 68.3
2017-07-01 68.6
2017-10-01 68.6
2018-01-01 68.4
2018-04-01 68.4
