Quarterly Percent
1998-01-01 71.2
1998-04-01 71
1998-07-01 70.7
1998-10-01 70.9
1999-01-01 71.4
1999-04-01 71.1
1999-07-01 70.6
1999-10-01 70.8
2000-01-01 71.8
2000-04-01 71.4
2000-07-01 70.6
2000-10-01 70.5
2001-01-01 71.2
2001-04-01 71.8
2001-07-01 70.4
2001-10-01 69.8
2002-01-01 70.5
2002-04-01 70.1
2002-07-01 69.5
2002-10-01 69.3
2003-01-01 69.6
2003-04-01 68.7
2003-07-01 68.2
2003-10-01 67.7
2004-01-01 69.5
2004-04-01 68.5
2004-07-01 67.6
2004-10-01 66.9
2005-01-01 67.8
2005-04-01 67.7
2005-07-01 67.6
2005-10-01 66.6
2006-01-01 67.5
2006-04-01 66.6
2006-07-01 66.1
2006-10-01 66.2
2007-01-01 66.2
2007-04-01 65.3
2007-07-01 65
2007-10-01 65.5
2008-01-01 65.8
2008-04-01 64.2
2008-07-01 64.1
2008-10-01 64.2
2009-01-01 63.8
2009-04-01 62.5
2009-07-01 63.2
2009-10-01 62.9
2010-01-01 62.4
2010-04-01 62.2
2010-07-01 62.3
2010-10-01 61.6
2011-01-01 61.2
2011-04-01 61.3
2011-07-01 60.8
2011-10-01 59.3
2012-01-01 58.8
2012-04-01 57.4
2012-07-01 57.2
2012-10-01 56.5
2013-01-01 56.3
2013-04-01 55.5
2013-07-01 54.2
2013-10-01 53
2014-01-01 52.4
2014-04-01 51.5
2014-07-01 50.5
2014-10-01 49.9
2015-01-01 49.6
2015-04-01 48.6
2015-07-01 48.9
2015-10-01 48.7
2016-01-01 47.6
2016-04-01 46.3
2016-07-01 46.6
2016-10-01 45.9
2017-01-01 45.5
2017-04-01 44.6
2017-07-01 44.5
2017-10-01 43.7
2018-01-01 43.6
2018-04-01 42.6
