Quarterly Percent
1999-01-01 72.9
2000-01-01 71.8
2001-01-01 71.5
2002-01-01 69
2003-01-01 65.3
2003-04-01 64.3
2003-07-01 65.9
2003-10-01 65.2
2004-01-01 64.9
2004-04-01 64.2
2004-07-01 63.6
2004-10-01 63.1
2005-01-01 62.4
2005-04-01 61.7
2005-07-01 63.0
2005-10-01 63.4
2006-01-01 62.3
2006-04-01 62.1
2006-07-01 62.6
2006-10-01 62.6
2007-01-01 62.3
2007-04-01 61.5
2007-07-01 63.2
2007-10-01 62.7
2008-01-01 63.3
2008-04-01 62.6
2008-07-01 62.9
2008-10-01 62.2
2009-01-01 61.7
2009-04-01 60.8
2009-07-01 62.0
2009-10-01 61.5
2010-01-01 61.1
2010-04-01 60.4
2010-07-01 60.3
2010-10-01 60.3
2011-01-01 60.2
2011-04-01 58.6
2011-07-01 58.8
2011-10-01 57.5
2012-01-01 57.0
2012-04-01 55.9
2012-07-01 55.8
2012-10-01 54.3
2013-01-01 54.6
2013-04-01 54.3
2013-07-01 53.6
2013-10-01 53.5
2014-01-01 52.7
2014-04-01 51.3
2014-07-01 51.2
2014-10-01 50.8
2015-01-01 50.4
2015-04-01 49.0
2015-07-01 49.6
2015-10-01 49.9
2016-01-01 49.1
2016-04-01 48.7
2016-07-01 48.4
2016-10-01 48.3
2017-01-01 47.2
2017-04-01 46.6
2017-07-01 47.4
2017-10-01 46.9
2018-01-01 45.9
2018-04-01 46.3