Quarterly Percent
1999-04-01 66.8
1999-07-01 71.3
1999-10-01 69.2
2000-01-01 66.9
2000-04-01 67
2000-07-01 70.4
2000-10-01 67.6
2001-01-01 66.7
2001-04-01 65.7
2001-07-01 70.9
2001-10-01 68.5
2002-01-01 66.3
2002-04-01 65.5
2002-07-01 68.5
2002-10-01 67.3
2003-01-01 65.9
2003-04-01 64
2003-07-01 68.4
2003-10-01 66.8
2004-01-01 65.0
2004-04-01 64.0
2004-07-01 68
2004-10-01 66
2005-01-01 64.8
2005-04-01 63.2
2005-07-01 67.1
2005-10-01 65.6
2006-01-01 63.2
2006-04-01 63.1
2006-07-01 68.3
2006-10-01 64.9
2007-01-01 63.4
2007-04-01 62.4
2007-07-01 66.1
2007-10-01 64.7
2008-01-01 62.8
2008-04-01 62.6
2008-07-01 67.1
2008-10-01 64.8
2009-01-01 61.1
2009-04-01 60.7
2009-07-01 63.4
2009-10-01 60.1
2010-01-01 58.2
2010-04-01 59.6
2010-07-01 64.1
2010-10-01 61.8
2011-01-01 58.4
2011-04-01 59.5
2011-07-01 63.5
2011-10-01 61.5
2012-01-01 59.4
2012-04-01 60.3
2012-07-01 63
2012-10-01 61.1
2013-01-01 58.4
2013-04-01 58.8
2013-07-01 63.0
2013-10-01 60.7
2014-01-01 58.4
2014-04-01 58.3
2014-07-01 61.3
2014-10-01 60.0
2015-01-01 58.8
2015-04-01 58.2
2015-07-01 62.1
2015-10-01 60.8
2016-01-01 59.0
2016-04-01 58.2
2016-07-01 60.5
2016-10-01 59.5
2017-01-01 57.8
2017-04-01 57.7
2017-07-01 59.1
2017-10-01 58.8
2018-01-01 58.1
2018-04-01 57.6