Quarterly Percent
1999-04-01 86.4
1999-07-01 87.3
1999-10-01 87.8
2000-01-01 87.7
2000-04-01 88.1
2000-07-01 88.5
2000-10-01 88.5
2001-01-01 88.4
2001-04-01 88.7
2001-07-01 88.9
2001-10-01 88.5
2002-01-01 87.4
2002-04-01 87.6
2002-07-01 87.3
2002-10-01 87.2
2003-01-01 86.8
2003-04-01 87
2003-07-01 86.8
2003-10-01 87.4
2004-01-01 87.5
2004-04-01 87.6
2004-07-01 87.9
2004-10-01 88.2
2005-01-01 88
2005-04-01 88.5
2005-07-01 88.6
2005-10-01 88.6
2006-01-01 88.5
2006-04-01 88.4
2006-07-01 88.4
2006-10-01 88.2
2007-01-01 88.0
2007-04-01 87.9
2007-07-01 88.0
2007-10-01 87.3
2008-01-01 86.8
2008-04-01 86.6
2008-07-01 85.3
2008-10-01 83.9
2009-01-01 79.6
2009-04-01 78.2
2009-07-01 77.4
2009-10-01 76.7
2010-01-01 75.4
2010-04-01 75.7
2010-07-01 75.4
2010-10-01 74.3
2011-01-01 73.7
2011-04-01 74.3
2011-07-01 74
2011-10-01 74.4
2012-01-01 74.1
2012-04-01 74.3
2012-07-01 74.9
2012-10-01 75.0
2013-01-01 75.4
2013-04-01 76.5
2013-07-01 77.5
2013-10-01 78.6
2014-01-01 78.1
2014-04-01 78.8
2014-07-01 79.6
2014-10-01 80.7
2015-01-01 80.3
2015-04-01 81.1
2015-07-01 81.4
2015-10-01 81.4
2016-01-01 81.1
2016-04-01 81.5
2016-07-01 82.5
2016-10-01 83.7
2017-01-01 83.8
2017-04-01 83.7
2017-07-01 85.1
2017-10-01 85.2
2018-01-01 85.7
2018-04-01 85.1