Quarter	Percent, Seasonally adjusted
1980-12-31	19.9
1981-03-31	23.7
1981-06-30	25.7
1981-09-30	28.1
1981-12-31	30.1
1982-03-31	27.8
1982-06-30	24.6
1982-09-30	22.8
1982-12-31	22.8
1983-03-31	22.5
1983-06-30	23.6
1983-09-30	22.3
1983-12-31	20.7
1984-03-31	19.6
1984-06-30	19.7
1984-09-30	18
1984-12-31	16.9
1985-03-31	17.9
1985-06-30	16.2
1985-09-30	16.8
1985-12-31	17.1
1986-03-31	16.4
1986-06-30	17.5
1986-09-30	18.3
1986-12-31	17.3
1987-03-31	17.8
1987-06-30	18.9
1987-09-30	18.8
1987-12-31	21.4
1988-03-31	22.9
1988-06-30	22.4
1988-09-30	23.8
1988-12-31	21.2
1989-03-31	20.2
1989-06-30	19.8
1989-09-30	17.7
1989-12-31	17.2
1990-03-31	14.5
1990-06-30	11.9
1990-09-30	10.2
1990-12-31	9.7
1991-03-31	8.4
1991-06-30	7.7
1991-09-30	7.1
1991-12-31	5.6
1992-03-31	5
1992-06-30	3.3
1992-09-30	2.1
1992-12-31	1.3
1993-03-31	1.1
1993-06-30	2
1993-09-30	2.8
1993-12-31	3.8
1994-03-31	5
1994-06-30	7.2
1994-09-30	8.5
1994-12-31	10.1
1995-03-31	12.2
1995-06-30	12.1
1995-09-30	12.6
1995-12-31	13.6
1996-03-31	13.7
1996-06-30	14.7
1996-09-30	16.8
1996-12-31	16.6
1997-03-31	17.1
1997-06-30	18.3
1997-09-30	16
1997-12-31	16.5
1998-03-31	17.5
1998-06-30	16.8
1998-09-30	18.7
1998-12-31	18.3
1999-03-31	17.9
1999-06-30	17.4
1999-09-30	16.8
1999-12-31	17.1
2000-03-31	17.8
2000-06-30	17.8
2000-09-30	17.1
2000-12-31	17.1
2001-03-31	15.7
2001-06-30	16.2
2001-09-30	16.6
2001-12-31	16.4
2002-03-31	17.5
2002-06-30	16.9
2002-09-30	17.6
2002-12-31	17.5
2003-03-31	16.3
2003-06-30	16.4
2003-09-30	15.7
2003-12-31	15
2004-03-31	15.7
2004-06-30	15.5
2004-09-30	15.5
2004-12-31	15.7
2005-03-31	14.7
2005-06-30	13.6
2005-09-30	11.8
2005-12-31	10.1
2006-03-31	8.8
2006-06-30	7.7
2006-09-30	6.5
2006-12-31	5.6
2007-03-31	4.3
2007-06-30	3.5
2007-09-30	3.9
2007-12-31	4.1
2008-03-31	4.8
2008-06-30	4.9
2008-09-30	4.1
2008-12-31	3.1
2009-03-31	1.3
2009-06-30	0.3
2009-09-30	-0.8
2009-12-31	-1.5
2010-03-31	-1.3
2010-06-30	-1.8
2010-09-30	-1.6
2010-12-31	-0.7
2011-03-31	-0.7
2011-06-30	0
2011-09-30	0.2
2011-12-31	-0.8
2012-03-31	-1.1
2012-06-30	-1.7
2012-09-30	-1.6
2012-12-31	-0.7
2013-03-31	0.9
2013-06-30	2.3
2013-09-30	3.9
2013-12-31	4.2
2014-03-31	4.4
2014-06-30	4.8
2014-09-30	5
2014-12-31	5.8
2015-03-31	6.3
2015-06-30	6.5
2015-09-30	6.9
2015-12-31	7.4
2016-03-31	8
2016-06-30	8.5
2016-09-30	8.6
2016-12-31	8.5
2017-03-31	8.2
2017-06-30	7.1
2017-09-30	6
2017-12-31	5.6
2018-03-31	3.9
2018-06-30	4.1
2018-09-30	3.8
2018-12-31	3.2
2019-03-31	3.7
2019-06-30	3.3
2019-09-30	3.1
2019-12-31	3.1
2020-03-31	0.5
2020-06-30	-7.8
2020-09-30	-9.7
2020-12-31	-12.4
2021-03-31	-13.6
2021-06-30	-6.1
2021-09-30	-3.4
2021-12-31	0.8
2022-03-31	5.7
2022-06-30	8.1
2022-09-30	8.5
2022-12-31	7.7
2023-03-31	7.5
2023-06-30	6.6
2023-09-30	6.8
2023-12-31	8.1