Quarterly Percent
1999-01-01 78.7
2000-01-01 78.6
2001-01-01 78.4
2002-01-01 78.6
2003-01-01 80.4
2003-04-01 79.9
2003-07-01 79.5
2003-10-01 80.1
2004-01-01 80.5
2004-04-01 80.5
2004-07-01 80.0
2004-10-01 80.9
2005-01-01 81.2
2005-04-01 80.8
2005-07-01 80.5
2005-10-01 81.1
2006-01-01 81.2
2006-04-01 81.0
2006-07-01 81.1
2006-10-01 81.9
2007-01-01 81.8
2007-04-01 81.8
2007-07-01 81.8
2007-10-01 82.5
2008-01-01 82.8
2008-04-01 82.9
2008-07-01 82.4
2008-10-01 83.0
2009-01-01 82.9
2009-04-01 83.2
2009-07-01 82.8
2009-10-01 83.4
2010-01-01 83.6
2010-04-01 83.3
2010-07-01 83.0
2010-10-01 83.5
2011-01-01 83.4
2011-04-01 82.8
2011-07-01 82.5
2011-10-01 83.2
2012-01-01 83.1
2012-04-01 83.1
2012-07-01 82.6
2012-10-01 83.3
2013-01-01 83.1
2013-04-01 83.5
2013-07-01 83.2
2013-10-01 84.0
2014-01-01 83.4
2014-04-01 82.9
2014-07-01 82.5
2014-10-01 83.2
2015-01-01 82.6
2015-04-01 82.5
2015-07-01 82.5
2015-10-01 83.1
2016-01-01 83.2
2016-04-01 82.5
2016-07-01 82.5
2016-10-01 82.7
2017-01-01 82.2
2017-04-01 82.5
2017-07-01 82.4
2017-10-01 82.7
2018-01-01 83.0
2018-04-01 83.2
