Quarter	Percent, Seasonally Adjusted
1986-01-01	13.9
1986-04-01	11.7
1986-07-01	11.4
1986-10-01	11.5
1987-01-01	11.1
1987-04-01	11.1
1987-07-01	10.9
1987-10-01	10.5
1988-01-01	10.5
1988-04-01	10.0
1988-07-01	9.7
1988-10-01	8.7
1989-01-01	8.2
1989-04-01	8.0
1989-07-01	7.6
1989-10-01	7.7
1990-01-01	7.4
1990-04-01	7.8
1990-07-01	7.8
1990-10-01	8.0
1991-01-01	8.2
1991-04-01	8.0
1991-07-01	8.6
1991-10-01	7.6
1992-01-01	7.0
1992-04-01	6.5
1992-07-01	6.6
1992-10-01	6.6
1993-01-01	6.6
1993-04-01	6.3
1993-07-01	6.5
1993-10-01	6.8
1994-01-01	7.3
1994-04-01	7.8
1994-07-01	7.9
1994-10-01	8.2
1995-01-01	7.7
1995-04-01	7.5
1995-07-01	7.0
1995-10-01	7.0
1996-01-01	6.9
1996-04-01	6.3
1996-07-01	6.2
1996-10-01	5.8
1997-01-01	6.2
1997-04-01	6.3
1997-07-01	6.1
1997-10-01	5.8
1998-01-01	5.7
1998-04-01	5.8
1998-07-01	6.3
1998-10-01	8.0
1999-01-01	9.0
1999-04-01	10.5
1999-07-01	10.7
1999-10-01	10.2
2000-01-01	9.3
2000-04-01	9.4
2000-07-01	10.2
2000-10-01	9.9
2001-01-01	10.2
2001-04-01	9.9
2001-07-01	9.8
2001-10-01	9.7
2002-01-01	10.2
2002-04-01	9.7
2002-07-01	9.6
2002-10-01	9.8
2003-01-01	9.8
2003-04-01	9.4
2003-07-01	9.5
2003-10-01	9.5
2004-01-01	9.7
2004-04-01	10.1
2004-07-01	10.2
2004-10-01	10.0
2005-01-01	9.5
2005-04-01	9.4
2005-07-01	9.2
2005-10-01	8.9
2006-01-01	8.6
2006-04-01	8.3
2006-07-01	7.5
2006-10-01	6.7
2007-01-01	6.8
2007-04-01	6.4
2007-07-01	7.4
2007-10-01	7.9
2008-01-01	7.6
2008-04-01	7.9
2008-07-01	7.5
2008-10-01	8.1
2009-01-01	10.6
2009-04-01	10.9
2009-07-01	10.9
2009-10-01	10.7
2010-01-01	9.0
2010-04-01	8.1
2010-07-01	7.8
2010-10-01	7.5
2011-01-01	7.3
2011-04-01	6.9
2011-07-01	7.2
2011-10-01	7.0
2012-01-01	6.6