Quarterly Percent
1998-01-01 62.9
1998-04-01 64.1
1998-07-01 63.8
1998-10-01 62.0
1999-01-01 62.3
1999-04-01 62.0
1999-07-01 61.6
1999-10-01 60.6
2000-01-01 62.0
2000-04-01 62.2
2000-07-01 62.9
2000-10-01 62.0
2001-01-01 61.9
2001-04-01 62.3
2001-07-01 61.0
2001-10-01 61.5
2002-01-01 62.8
2002-04-01 63
2002-07-01 62.1
2002-10-01 60
2003-01-01 61.7
2003-04-01 62.4
2003-07-01 62.7
2003-10-01 61.8
2004-01-01 60.5
2004-04-01 59
2004-07-01 58
2004-10-01 58.9
2005-01-01 58.7
2005-04-01 58.6
2005-07-01 57.5
2005-10-01 57.7
2006-01-01 57.6
2006-04-01 57.9
2006-07-01 58.9
2006-10-01 58.3
2007-01-01 59.1
2007-04-01 57.8
2007-07-01 58.6
2007-10-01 59.1
2008-01-01 58.1
2008-04-01 58.2
2008-07-01 58.8
2008-10-01 58.3
2009-01-01 58.2
2009-04-01 57.5
2009-07-01 57
2009-10-01 57.1
2010-01-01 56.1
2010-04-01 55.9
2010-07-01 55.5
2010-10-01 55.8
2011-01-01 55.9
2011-04-01 54
2011-07-01 54.3
2011-10-01 52.6
2012-01-01 52.8
2012-04-01 52.2
2012-07-01 51.6
2012-10-01 50.1
2013-01-01 51.6
2013-04-01 53.4
2013-07-01 54.3
2013-10-01 54.8
2014-01-01 54.1
2014-04-01 54.6
2014-07-01 54.6
2014-10-01 53.8
2015-01-01 54.6
2015-04-01 56.6
2015-07-01 56.0
2015-10-01 56.6
2016-01-01 55.1
2016-04-01 58.9
2016-07-01 60.6
2016-10-01 59.3
2017-01-01 60.4
2017-04-01 62.2
2017-07-01 64.1
2017-10-01 65.4
2018-01-01 64.0
2018-04-01 64.5