Quarterly Percent
1998-01-01 75.6
1998-04-01 75.4
1998-07-01 76
1998-10-01 75.4
1999-01-01 73.3
1999-04-01 75.2
1999-07-01 74.5
1999-10-01 74.8
2000-01-01 74.4
2000-04-01 74.1
2000-07-01 74.3
2000-10-01 75.6
2001-01-01 75.4
2001-04-01 76
2001-07-01 76.3
2001-10-01 76.7
2002-01-01 75.4
2002-04-01 74.7
2002-07-01 74.6
2002-10-01 74.3
2003-01-01 74.6
2003-04-01 73.7
2003-07-01 73.1
2003-10-01 72.7
2004-01-01 75.5
2004-04-01 74.7
2004-07-01 74.7
2004-10-01 73.9
2005-01-01 74.1
2005-04-01 73
2005-07-01 72.4
2005-10-01 72
2006-01-01 72.2
2006-04-01 72
2006-07-01 71.8
2006-10-01 71.9
2007-01-01 71.8
2007-04-01 72
2007-07-01 72
2007-10-01 71.4
2008-01-01 71.7
2008-04-01 71.2
2008-07-01 71.3
2008-10-01 71.1
2009-01-01 71.1
2009-04-01 70.8
2009-07-01 69.9
2009-10-01 70.4
2010-01-01 69.3
2010-04-01 69.2
2010-07-01 68.6
2010-10-01 68.6
2011-01-01 69.4
2011-04-01 69.3
2011-07-01 70.6
2011-10-01 71.2
2012-01-01 70.5
2012-04-01 70.6
2012-07-01 69.5
2012-10-01 69.1
2013-01-01 69
2013-04-01 69.2
2013-07-01 69
2013-10-01 68.9
2014-01-01 68.8
2014-04-01 69.9
2014-07-01 70.9
2014-10-01 70.9
2015-01-01 71.1
2015-04-01 71.2
2015-07-01 70.3
2015-10-01 69.3
2016-01-01 67.5
2016-04-01 66.9
2016-07-01 65.7
2016-10-01 65.5
2017-01-01 65.1
2017-04-01 65.6
2017-07-01 65.0
2017-10-01 64.9
2018-01-01 64.1
2018-04-01 62.9