Quarterly Percent
1999-01-01 66.8
1999-04-01 67.6
1999-07-01 67.8
1999-10-01 67
2000-01-01 66.4
2000-04-01 67.4
2000-07-01 68.7
2000-10-01 67.4
2001-01-01 67.6
2001-04-01 67.5
2001-07-01 69.2
2001-10-01 68.1
2002-01-01 68.7
2002-04-01 68.5
2002-07-01 67.5
2002-10-01 66.5
2003-01-01 66.8
2003-04-01 66.9
2003-07-01 66.9
2003-10-01 67.9
2004-01-01 68.6
2004-04-01 69.9
2004-07-01 71.1
2004-10-01 69.5
2005-01-01 70
2005-04-01 70.1
2005-07-01 71.2
2005-10-01 71.3
2006-01-01 70.9
2006-04-01 71.4
2006-07-01 71.2
2006-10-01 70
2007-01-01 70.1
2007-04-01 71.7
2007-07-01 72.3
2007-10-01 71.1
2008-01-01 70.8
2008-04-01 71.3
2008-07-01 73.1
2008-10-01 72
2009-01-01 70.5
2009-04-01 71.7
2009-07-01 73
2009-10-01 72.2
2010-01-01 71.5
2010-04-01 71.7
2010-07-01 71.4
2010-10-01 71.4
2011-01-01 69.8
2011-04-01 69.9
2011-07-01 70.7
2011-10-01 70.7
2012-01-01 70.1
2012-04-01 69.6
2012-07-01 70.9
2012-10-01 71
2013-01-01 70.3
2013-04-01 70.4
2013-07-01 71.3
2013-10-01 70.1
2014-01-01 70.1
2014-04-01 71.2
2014-07-01 71.3
2014-10-01 70.9
2015-01-01 70.5
2015-04-01 72.2
2015-07-01 73.0
2015-10-01 71.3
2016-01-01 70.5
2016-04-01 71.9
2016-07-01 71.8
2016-10-01 72.4
2017-01-01 73.1
2017-04-01 73.9
2017-07-01 75.2
2017-10-01 74.7
2018-01-01 74.2
2018-04-01 75.1