Quarterly Percent
1998-04-01 67.5
1999-04-01 64.1
2000-04-01 66.5
2001-04-01 64.6
2002-04-01 65.4
2003-04-01 64.6
2004-04-01 62.7
2005-04-01 60.9
2006-04-01 64.6
2007-04-01 65.4
2008-04-01 63.6
2009-04-01 60.9
2010-01-01 61.9
2010-04-01 63.2
2010-07-01 64.8
2010-10-01 64.1
2011-01-01 62.9
2011-04-01 62.3
2011-07-01 64.5
2011-10-01 66.1
2012-01-01 61.6
2012-04-01 62.0
2012-07-01 64.0
2012-10-01 64.1
2013-01-01 63.4
2013-04-01 62.9
2013-07-01 62.2
2013-10-01 63.1
2014-01-01 60.4
2014-04-01 61.8
2014-07-01 63.5
2014-10-01 64.1
2015-01-01 59.7
2015-04-01 60.3
2015-07-01 61.1
2015-10-01 61.4
2016-01-01 60.9
2016-04-01 60.0
2016-07-01 60.9
2016-10-01 65.6
2017-01-01 62.2
2017-04-01 63.2
2017-07-01 65.1
2017-10-01 65.0
2018-01-01 60.9
2018-04-01 62.4