Quarter	Percent, Seasonally adjusted
1978-03-31	15.6
1978-06-30	15.6
1978-09-30	16
1978-12-31	15.2
1979-03-31	14.2
1979-06-30	14.1
1979-09-30	13.9
1979-12-31	14
1980-03-31	12.3
1980-06-30	12.3
1980-09-30	10.8
1980-12-31	11.7
1981-03-31	12.9
1981-06-30	12.8
1981-09-30	12.8
1981-12-31	10.7
1982-03-31	9.3
1982-06-30	9
1982-09-30	9.9
1982-12-31	10.9
1983-03-31	13.8
1983-06-30	12.4
1983-09-30	11
1983-12-31	10.6
1984-03-31	8.2
1984-06-30	9.8
1984-09-30	9.8
1984-12-31	10.3
1985-03-31	10.2
1985-06-30	8.5
1985-09-30	9.3
1985-12-31	9.2
1986-03-31	10.5
1986-06-30	13.2
1986-09-30	17.3
1986-12-31	16
1987-03-31	15.4
1987-06-30	15.6
1987-09-30	11.6
1987-12-31	12.9
1988-03-31	16.6
1988-06-30	15.9
1988-09-30	18.1
1988-12-31	16.9
1989-03-31	12.4
1989-06-30	10.5
1989-09-30	9.9
1989-12-31	11.1
1990-03-31	11
1990-06-30	11.4
1990-09-30	8.1
1990-12-31	6.1
1991-03-31	5
1991-06-30	4
1991-09-30	3.9
1991-12-31	3.4
1992-03-31	3.8
1992-06-30	3.1
1992-09-30	2.9
1992-12-31	3.4
1993-03-31	1.9
1993-06-30	2.4
1993-09-30	2.4
1993-12-31	2.5
1994-03-31	4.1
1994-06-30	2.7
1994-09-30	2.9
1994-12-31	2.1
1995-03-31	2.9
1995-06-30	4.4
1995-09-30	5.7
1995-12-31	6.8
1996-03-31	8.4
1996-06-30	8.7
1996-09-30	7.5
1996-12-31	7.3
1997-03-31	6.7
1997-06-30	8
1997-09-30	9
1997-12-31	10.3
1998-03-31	8.7
1998-06-30	8.1
1998-09-30	7.6
1998-12-31	6.4
1999-03-31	6.5
1999-06-30	7
1999-09-30	6.8
1999-12-31	7.5
2000-03-31	6.4
2000-06-30	5.2
2000-09-30	6.3
2000-12-31	6
2001-03-31	8
2001-06-30	9.2
2001-09-30	8.9
2001-12-31	9.1
2002-03-31	8.9
2002-06-30	8.3
2002-09-30	8.3
2002-12-31	7.6
2003-03-31	7.8
2003-06-30	7.7
2003-09-30	8.2
2003-12-31	9.9
2004-03-31	9.5
2004-06-30	10.5
2004-09-30	9.4
2004-12-31	8.1
2005-03-31	8.5
2005-06-30	7.9
2005-09-30	8.3
2005-12-31	9.1
2006-03-31	8.5
2006-06-30	7.2
2006-09-30	7.6
2006-12-31	7.8
2007-03-31	7.3
2007-06-30	9.1
2007-09-30	8
2007-12-31	7.2
2008-03-31	7.2
2008-06-30	4.3
2008-09-30	4.6
2008-12-31	0.9
2009-03-31	3.4
2009-06-30	3.6
2009-09-30	3.9
2009-12-31	7.6
2010-03-31	5.2
2010-06-30	5.7
2010-09-30	4
2010-12-31	2.5
2011-03-31	1.9
2011-06-30	0.5
2011-09-30	1.5
2011-12-31	1.3
2012-03-31	1.8
2012-06-30	3.3
2012-09-30	4
2012-12-31	6.6
2013-03-31	7.7
2013-06-30	9.1
2013-09-30	9.8
2013-12-31	9.5