Quarterly Percent
1998-04-01 76.0
1999-04-01 76
2000-04-01 76
2001-04-01 76.1
2002-04-01 74.6
2003-04-01 73.9
2004-04-01 73
2005-04-01 72.2
2006-04-01 72.8
2007-04-01 73.6
2008-04-01 73.3
2009-04-01 72.4
2010-01-01 70.0
2010-04-01 71.3
2010-07-01 71.5
2010-10-01 71.3
2011-01-01 71.1
2011-04-01 71.6
2011-07-01 72.0
2011-10-01 71.9
2012-01-01 70.7
2012-04-01 71.4
2012-07-01 71.7
2012-10-01 71.5
2013-01-01 70.5
2013-04-01 70.8
2013-07-01 70.6
2013-10-01 71.2
2014-01-01 70.0
2014-04-01 70.8
2014-07-01 70.6
2014-10-01 71.3
2015-01-01 70.5
2015-04-01 70.8
2015-07-01 70.5
2015-10-01 71.1
2016-01-01 70.2
2016-04-01 70.8
2016-07-01 71.0
2016-10-01 71.5
2017-01-01 70.1
2017-04-01 71.3
2017-07-01 71.4
2017-10-01 71.5
2018-01-01 70.2
2018-04-01 71.4