Quarterly Percent
1986-01-01 64.3
1986-04-01 63.9
1986-07-01 63.6
1986-10-01 63.9
1987-01-01 63.9
1987-04-01 63.4
1987-07-01 63.2
1987-10-01 63.6
1988-01-01 62.2
1988-04-01 61.3
1988-07-01 60.1
1988-10-01 60.7
1989-01-01 59.5
1989-04-01 58.6
1989-07-01 58.4
1989-10-01 59.3
1990-01-01 59
1990-04-01 59.1
1990-07-01 58.4
1990-10-01 58.6
1991-01-01 57.7
1991-04-01 57.2
1991-07-01 56.5
1991-10-01 56.8
1992-01-01 56.6
1992-04-01 56.8
1992-07-01 56.1
1992-10-01 56.9
1993-01-01 56.6
1993-04-01 56.8
1993-07-01 57
1993-10-01 58
1994-01-01 57.9
1994-04-01 58.4
1994-07-01 58.7
1994-10-01 60
1995-01-01 60
1995-04-01 60.3
1995-07-01 60.5
1995-10-01 61.4
1996-01-01 61.2
1996-04-01 61.4
1996-07-01 61.6
1996-10-01 61.7
1997-01-01 61.1
1997-04-01 61
1997-07-01 60.7
1997-10-01 61.2
1998-01-01 60.4
1998-04-01 59.8
1998-07-01 59.7
1998-10-01 60.1
1999-01-01 60.3
1999-04-01 60.0
1999-07-01 60.3
1999-10-01 61.6
2000-01-01 60.9
2000-04-01 60.4
2000-07-01 61.2
2000-10-01 62.3
2001-01-01 61.8
2001-04-01 61.8
2001-07-01 62
2001-10-01 63.2
2002-01-01 63.2
2002-04-01 62.8
2002-07-01 62.6
2002-10-01 63.4
2003-01-01 62.8
2003-04-01 62.6
2003-07-01 63.3
2003-10-01 63.9
2004-01-01 63.6
2004-04-01 63.4
2004-07-01 64.1
2004-10-01 65.7
2005-01-01 64.8
2005-04-01 64.5
2005-07-01 65.2
2005-10-01 65.8
2006-01-01 65.6
2006-04-01 65.6
2006-07-01 65.2
2006-10-01 65.8
2007-01-01 65.8
2007-04-01 65.8
2007-07-01 65.5
2007-10-01 66.6
2008-01-01 64.9
2008-04-01 65.5
2008-07-01 65.4
2008-10-01 66.4
2009-01-01 64.6
2009-04-01 64.2
2009-07-01 63.3
2009-10-01 63.9
2010-01-01 63.5
2010-04-01 63.2
2010-07-01 63.5
2010-10-01 63.9
2011-01-01 63.9
2011-04-01 63.7
2011-07-01 63.6
2011-10-01 64.3
2012-01-01 63.9
2012-04-01 63.5
2012-07-01 63.0
2012-10-01 62.8
2013-01-01 63.5
2013-04-01 63.3
2013-07-01 63.9
2013-10-01 64.9
2014-01-01 64.9
2014-04-01 64.5
2014-07-01 64.6
2014-10-01 65.9
2015-01-01 65.7
2015-04-01 65.0
2015-07-01 64.1
2015-10-01 65.3
2016-01-01 65.4
2016-04-01 66.1
2016-07-01 66.2
2016-10-01 67.2
2017-01-01 67.3
2017-04-01 66.5
2017-07-01 67.4
2017-10-01 68.2
2018-01-01 67.9
2018-04-01 67.5
2018-07-01 67.9