Quarterly Percent
1999-01-01 79.8
2000-01-01 76.8
2000-04-01 77.5
2000-07-01 78.1
2000-10-01 78.1
2001-01-01 75.4
2001-04-01 75.2
2001-07-01 75.9
2001-10-01 75
2002-01-01 72.5
2002-04-01 72.8
2002-07-01 73.5
2002-10-01 73.2
2003-01-01 71.9
2003-04-01 72.8
2003-07-01 73.7
2003-10-01 73.4
2004-01-01 72.2
2004-04-01 73.6
2004-07-01 74.5
2004-10-01 75.3
2005-01-01 74.6
2005-04-01 75.7
2005-07-01 76.8
2005-10-01 77.2
2006-01-01 75.8
2006-04-01 77.8
2006-07-01 79.3
2006-10-01 80.3
2007-01-01 79.7
2007-04-01 80.9
2007-07-01 81.5
2007-10-01 82.5
2008-01-01 82.7
2008-04-01 83.7
2008-07-01 84.9
2008-10-01 84.7
2009-01-01 83.3
2009-04-01 84
2009-07-01 84.4
2009-10-01 83.2
2010-01-01 81
2010-04-01 82.7
2010-07-01 83.4
2010-10-01 83
2011-01-01 82
2011-04-01 83.1
2011-07-01 83.6
2011-10-01 83.3
2012-01-01 82
2012-04-01 83.1
2012-07-01 83.6
2012-10-01 82.9
2013-01-01 81.4
2013-04-01 82.8
2013-07-01 83.5
2013-10-01 83
2014-01-01 82
2014-04-01 83.8
2014-07-01 85.2
2014-10-01 84.7
2015-01-01 83.9
2015-04-01 84.6
2015-07-01 85.6
2015-10-01 85.7
2016-01-01 85.0
2016-04-01 86.0
2016-07-01 86.7
2016-10-01 86.7
2017-01-01 86.5
2017-04-01 87.3
2017-07-01 88.0
2017-10-01 87.6
2018-01-01 87.3
2018-04-01 88.3
