Quarterly Percent
1999-01-01 76.6
1999-04-01 77
1999-07-01 77.4
1999-10-01 77.3
2000-01-01 76.8
2000-04-01 77.3
2000-07-01 77.6
2000-10-01 77.6
2001-01-01 77.1
2001-04-01 77.1
2001-07-01 77.3
2001-10-01 76.8
2002-01-01 76.7
2002-04-01 77
2002-07-01 77.3
2002-10-01 77
2003-01-01 76.9
2003-04-01 77.9
2003-07-01 78.3
2003-10-01 78.2
2004-01-01 77.6
2004-04-01 77.8
2004-07-01 78
2004-10-01 78
2005-01-01 77.9
2005-04-01 78.6
2005-07-01 79.3
2005-10-01 79.1
2006-01-01 79.3
2006-04-01 80
2006-07-01 80.1
2006-10-01 80.3
2007-01-01 79.7
2007-04-01 80.1
2007-07-01 80.4
2007-10-01 80.4
2008-01-01 79.8
2008-04-01 80.2
2008-07-01 80.8
2008-10-01 80.4
2009-01-01 80
2009-04-01 80.3
2009-07-01 80.4
2009-10-01 80.4
2010-01-01 80.6
2010-04-01 81
2010-07-01 81.2
2010-10-01 80.7
2011-01-01 80.3
2011-04-01 81.3
2011-07-01 81.6
2011-10-01 81.8
2012-01-01 82.1
2012-04-01 82.8
2012-07-01 83.4
2012-10-01 83.2
2013-01-01 82.4
2013-04-01 83.4
2013-07-01 83.7
2013-10-01 83.7
2014-01-01 84.5
2014-04-01 84.9
2014-07-01 85.4
2014-10-01 85.2
2015-01-01 85.4
2015-04-01 85.8
2015-07-01 86.1
2015-10-01 85.9
2016-01-01 85.6
2016-04-01 86.2
2016-07-01 86.4
2016-10-01 86.3
2017-01-01 86.2
2017-04-01 86.9
2017-07-01 87.2
2017-10-01 87.0
2018-01-01 87.0
2018-04-01 87.4