Quarterly Percent
1999-04-01 65.9
2000-01-01 62.8
2000-04-01 63.6
2000-07-01 64.3
2000-10-01 62.8
2001-01-01 63.8
2001-04-01 63.7
2001-07-01 64
2001-10-01 65.3
2002-01-01 65
2002-04-01 64.7
2002-07-01 65.6
2002-10-01 63.2
2003-01-01 63.4
2003-04-01 65.9
2003-07-01 68.1
2003-10-01 67.6
2004-01-01 64.8
2004-04-01 65.1
2004-07-01 66.1
2004-10-01 66.7
2005-01-01 64.5
2005-04-01 65.7
2005-07-01 68.3
2005-10-01 68.4
2006-01-01 70.2
2006-04-01 71.7
2006-07-01 71.8
2006-10-01 71.9
2007-01-01 72.4
2007-04-01 73.5
2007-07-01 74.3
2007-10-01 73.7
2008-01-01 74.6
2008-04-01 73.8
2008-07-01 73.6
2008-10-01 72.9
2009-01-01 66.4
2009-04-01 64.5
2009-07-01 65.4
2009-10-01 61.1
2010-01-01 56.8
2010-04-01 58.7
2010-07-01 64.6
2010-10-01 66.7
2011-01-01 66.1
2011-04-01 66.5
2011-07-01 70.1
2011-10-01 68.4
2012-01-01 67.7
2012-04-01 68.8
2012-07-01 71.7
2012-10-01 70.5
2013-01-01 70
2013-04-01 72.4
2013-07-01 72.3
2013-10-01 70.7
2014-01-01 70.8
2014-04-01 73.5
2014-07-01 73.3
2014-10-01 74.2
2015-01-01 72.7
2015-04-01 75.3
2015-07-01 78.3
2015-10-01 75.0
2016-01-01 73.2
2016-04-01 76.6
2016-07-01 78.0
2016-10-01 74.9
2017-01-01 76.1
2017-04-01 76.7
2017-07-01 78.5
2017-10-01 78.3
2018-01-01 76.1
2018-04-01 78.5