Quarterly Percent
1999-01-01 65
2000-01-01 68.7
2000-04-01 67.9
2000-07-01 67.8
2000-10-01 70.2
2001-01-01 71.5
2001-04-01 68.4
2001-07-01 68.7
2001-10-01 70.7
2002-01-01 71.1
2002-04-01 70.3
2002-07-01 71.1
2002-10-01 71
2003-01-01 70.6
2003-04-01 69.7
2003-07-01 69.5
2003-10-01 69.6
2004-01-01 71.2
2004-04-01 70.7
2004-07-01 69.8
2004-10-01 70
2005-01-01 71.3
2005-04-01 70.2
2005-07-01 67.8
2005-10-01 68.7
2006-01-01 71
2006-04-01 70.2
2006-07-01 67.9
2006-10-01 68.4
2007-01-01 69.3
2007-04-01 68.8
2007-07-01 67.6
2007-10-01 67.1
2008-01-01 67.3
2008-04-01 66.7
2008-07-01 66.4
2008-10-01 66.2
2009-01-01 66.3
2009-04-01 66.1
2009-07-01 64.8
2009-10-01 64.9
2010-01-01 64.7
2010-04-01 64
2010-07-01 62.6
2010-10-01 62
2011-01-01 61.7
2011-04-01 60.6
2011-07-01 59.7
2011-10-01 59.5
2012-01-01 60
2012-04-01 58.4
2012-07-01 57.3
2012-10-01 57.2
2013-01-01 57.3
2013-04-01 56.4
2013-07-01 55.5
2013-10-01 54.9
2014-01-01 55.4
2014-04-01 55.2
2014-07-01 53.9
2014-10-01 53.3
2015-01-01 54.1
2015-04-01 54.6
2015-07-01 52.2
2015-10-01 51.6
2016-01-01 52.7
2016-04-01 52.7
2016-07-01 51.3
2016-10-01 50.1
2017-01-01 50.9
2017-04-01 49.8
2017-07-01 48.9
2017-10-01 49.9
2018-01-01 50.7
2018-04-01 49.4