Quarter	Percent
1976-06-30	-8
1976-09-30	-5.3
1976-12-31	4.7
1977-03-31	2.1
1977-06-30	5
1977-09-30	8.2
1977-12-31	11.8
1978-03-31	18.4
1978-06-30	22.5
1978-09-30	23.3
1978-12-31	23
1979-03-31	24.8
1979-06-30	26.3
1979-09-30	29.2
1979-12-31	26.8
1980-03-31	22.7
1980-06-30	18.9
1980-09-30	19.2
1980-12-31	20
1981-03-31	24
1981-06-30	25.2
1981-09-30	28.1
1981-12-31	30.4
1982-03-31	27.7
1982-06-30	24.3
1982-09-30	22.6
1982-12-31	22.9
1983-03-31	22.6
1983-06-30	23.6
1983-09-30	22.3
1983-12-31	20.6
1984-03-31	19.7
1984-06-30	19.8
1984-09-30	18.2
1984-12-31	17.6
1985-03-31	18
1985-06-30	16.1
1985-09-30	16.9
1985-12-31	16.9
1986-03-31	16.5
1986-06-30	17.5
1986-09-30	18.3
1986-12-31	17.1
1987-03-31	17.8
1987-06-30	19
1987-09-30	18.6
1987-12-31	21.3
1988-03-31	23
1988-06-30	22.5
1988-09-30	23.7
1988-12-31	21.1
1989-03-31	20.4
1989-06-30	19.8
1989-09-30	17.6
1989-12-31	17.2
1990-03-31	14.6
1990-06-30	11.8
1990-09-30	10.1
1990-12-31	9.9
1991-03-31	8.5
1991-06-30	7.5
1991-09-30	7.1
1991-12-31	5.7
1992-03-31	5.1
1992-06-30	3.2
1992-09-30	2.8
1992-12-31	1.6
1993-03-31	1.4
1993-06-30	1.4
1993-09-30	1.9
1993-12-31	3.4
1994-03-31	3
1994-06-30	5.3
1994-09-30	6.8
1994-12-31	9
1995-03-31	10.9
1995-06-30	11
1995-09-30	11.3
1995-12-31	12.8
1996-03-31	13.1
1996-06-30	13.6
1996-09-30	16.1
1996-12-31	16.1
1997-03-31	16.6
1997-06-30	18.3
1997-09-30	15.5
1997-12-31	16.2
1998-03-31	16.8
1998-06-30	16.3
1998-09-30	18.1
1998-12-31	18.3
1999-03-31	18.1
1999-06-30	16.9
1999-09-30	16
1999-12-31	15.2
2000-03-31	15.5
2000-06-30	16
2000-09-30	15.2
2000-12-31	16.1
2001-03-31	14.9
2001-06-30	15.6
2001-09-30	16.5
2001-12-31	17.2
2002-03-31	18.7
2002-06-30	17.4
2002-09-30	18.3
2002-12-31	16.6
2003-03-31	14.9
2003-06-30	14.8
2003-09-30	13.3
2003-12-31	13.6
2004-03-31	14.5
2004-06-30	15.3
2004-09-30	16.1
2004-12-31	16
2005-03-31	15.5
2005-06-30	13.5
2005-09-30	10.7
2005-12-31	8.5
2006-03-31	7
2006-06-30	6.9
2006-09-30	6.8
2006-12-31	6.9
2007-03-31	5.7
2007-06-30	4
2007-09-30	4.1
2007-12-31	4.5
2008-03-31	5.7
2008-06-30	6.6
2008-09-30	6.2
2008-12-31	2.5
2009-03-31	0
2009-06-30	-2.3
2009-09-30	-4.1
2009-12-31	-0.8
2010-03-31	-0.6
2010-06-30	-0.3
2010-09-30	-0.1
2010-12-31	-0.8
2011-03-31	-0.8
2011-06-30	0
2011-09-30	0.2
2011-12-31	-0.8
2012-03-31	-1.3
2012-06-30	-1.9
2012-09-30	-1.7
2012-12-31	-0.4
2013-03-31	1.1
2013-06-30	2.3
2013-09-30	4.2
2013-12-31	4.2
2014-03-31	4.6
2014-06-30	5.1
2014-09-30	5.1
2014-12-31	5.8
2015-03-31	6.4