Quarterly Percent
1999-04-01 85.2
2000-04-01 85.4
2001-04-01 85.6
2002-04-01 85.7
2003-04-01 86.1
2004-04-01 85.9
2005-01-01 86.4
2005-04-01 86.5
2005-07-01 86.3
2005-10-01 86.3
2006-01-01 87
2006-04-01 87.1
2006-07-01 87.2
2006-10-01 87
2007-01-01 87.3
2007-04-01 87.1
2007-07-01 87.3
2007-10-01 87.3
2008-01-01 86.9
2008-04-01 86.9
2008-07-01 87.3
2008-10-01 87.2
2009-01-01 86.9
2009-04-01 87.1
2009-07-01 87.1
2009-10-01 87.5
2010-01-01 87
2010-04-01 87.4
2010-07-01 87.3
2010-10-01 87.4
2011-01-01 87.3
2011-04-01 87.7
2011-07-01 87.8
2011-10-01 88
2012-01-01 87.6
2012-04-01 87.7
2012-07-01 87.7
2012-10-01 87.8
2013-01-01 87.6
2013-04-01 87.9
2013-07-01 87.7
2013-10-01 87.6
2014-01-01 87.4
2014-04-01 87.6
2014-07-01 87.7
2014-10-01 87.5
2015-01-01 87.6
2015-04-01 87.6
2015-07-01 87.4
2015-10-01 87.6
2016-01-01 87.3
2016-04-01 87.2
2016-07-01 87.5
2016-10-01 87.5
2017-01-01 87.2
2017-04-01 87.1
2017-07-01 87.4
2017-10-01 87.5
2018-01-01 87.6
2018-04-01 87.5