Quarterly Percent
1986-01-01 51.8
1986-04-01 51.7
1986-07-01 51.9
1986-10-01 52.4
1987-01-01 52.2
1987-04-01 52.3
1987-07-01 52.2
1987-10-01 53.0
1988-01-01 51.7
1988-04-01 51.2
1988-07-01 50.5
1988-10-01 51
1989-01-01 49.4
1989-04-01 48.9
1989-07-01 49
1989-10-01 49.7
1990-01-01 49.6
1990-04-01 50.5
1990-07-01 49.8
1990-10-01 49.9
1991-01-01 49.2
1991-04-01 49.1
1991-07-01 48.7
1991-10-01 48.9
1992-01-01 48.3
1992-04-01 49
1992-07-01 48.5
1992-10-01 49.2
1993-01-01 48.5
1993-04-01 48.6
1993-07-01 49.4
1993-10-01 49.9
1994-01-01 49.9
1994-04-01 50.3
1994-07-01 50.8
1994-10-01 52
1995-01-01 51.5
1995-04-01 51.9
1995-07-01 52.4
1995-10-01 53
1996-01-01 52.9
1996-04-01 53.6
1996-07-01 54.1
1996-10-01 53.7
1997-01-01 53
1997-04-01 53.2
1997-07-01 53.1
1997-10-01 53.3
1998-01-01 52.5
1998-04-01 52.3
1998-07-01 52.8
1998-10-01 53.0
1999-01-01 53.1
1999-04-01 53.1
1999-07-01 53.4
1999-10-01 54.2
2000-01-01 53.4
2000-04-01 53.0
2000-07-01 54.3
2000-10-01 55.1
2001-01-01 54.4
2001-04-01 55.1
2001-07-01 54.8
2001-10-01 56.2
2002-01-01 55.5
2002-04-01 55.6
2002-07-01 55.6
2002-10-01 56.4
2003-01-01 55.5
2003-04-01 55.7
2003-07-01 56.8
2003-10-01 57.1
2004-01-01 56.4
2004-04-01 55.9
2004-07-01 57.2
2004-10-01 58.8
2005-01-01 57.7
2005-04-01 57.9
2005-07-01 58.7
2005-10-01 58.8
2006-01-01 58.7
2006-04-01 59.0
2006-07-01 58.5
2006-10-01 58.7
2007-01-01 59.0
2007-04-01 59.2
2007-07-01 58.6
2007-10-01 60.3
2008-01-01 58.2
2008-04-01 59.4
2008-07-01 59.7
2008-10-01 60.4
2009-01-01 58.7
2009-04-01 58.1
2009-07-01 58.1
2009-10-01 58.3
2010-01-01 57.7
2010-04-01 57.5
2010-07-01 57.5
2010-10-01 58.1
2011-01-01 58.2
2011-04-01 58.2
2011-07-01 57.9
2011-10-01 58.8
2012-01-01 58.2
2012-04-01 58.3
2012-07-01 58.1
2012-10-01 57.3
2013-01-01 58.2
2013-04-01 58
2013-07-01 58.6
2013-10-01 59.4
2014-01-01 59.4
2014-04-01 58.7
2014-07-01 59.4
2014-10-01 60.7
2015-01-01 60.2
2015-04-01 59.4
2015-07-01 58.9
2015-10-01 60.1
2016-01-01 60.2
2016-04-01 60.8
2016-07-01 60.9
2016-10-01 62.1
2017-01-01 61.7
2017-04-01 61.1
2017-07-01 62.1
2017-10-01 63.0
2018-01-01 62.7
2018-04-01 62.6
2018-07-01 63.2