Quarter	Percent, Seasonally adjusted
1988-03-31	21.5
1988-06-30	20.4
1988-09-30	21.2
1988-12-31	18.7
1989-03-31	18.1
1989-06-30	18.2
1989-09-30	16.4
1989-12-31	15.8
1990-03-31	14.1
1990-06-30	11.8
1990-09-30	10
1990-12-31	9.4
1991-03-31	7.9
1991-06-30	7
1991-09-30	5.7
1991-12-31	4.4
1992-03-31	3.4
1992-06-30	1.8
1992-09-30	1.4
1992-12-31	0.9
1993-03-31	1.1
1993-06-30	2.6
1993-09-30	3.9
1993-12-31	5.5
1994-03-31	6.6
1994-06-30	8.3
1994-09-30	9.5
1994-12-31	11
1995-03-31	12.4
1995-06-30	12.3
1995-09-30	12.9
1995-12-31	13.7
1996-03-31	13.7
1996-06-30	14.7
1996-09-30	16.3
1996-12-31	16.5
1997-03-31	17.1
1997-06-30	17.5
1997-09-30	15.3
1997-12-31	15.8
1998-03-31	16.5
1998-06-30	16.2
1998-09-30	17.6
1998-12-31	16.6
1999-03-31	16
1999-06-30	15.4
1999-09-30	14.8
1999-12-31	14.6
2000-03-31	14.5
2000-06-30	14.1
2000-09-30	13.1
2000-12-31	12.5
2001-03-31	11.5
2001-06-30	12.1
2001-09-30	12.8
2001-12-31	13.9
2002-03-31	15.2
2002-06-30	15
2002-09-30	15.8
2002-12-31	15.4
2003-03-31	14.6
2003-06-30	14.8
2003-09-30	14.1
2003-12-31	13.5
2004-03-31	13.9
2004-06-30	13.8
2004-09-30	13.9
2004-12-31	14.1
2005-03-31	13.7
2005-06-30	12.6
2005-09-30	11.1
2005-12-31	9.6
2006-03-31	7.8
2006-06-30	6.8
2006-09-30	5.9
2006-12-31	5.7
2007-03-31	4.8
2007-06-30	4.5
2007-09-30	5
2007-12-31	5
2008-03-31	5.7
2008-06-30	5.7
2008-09-30	4.7
2008-12-31	3.6
2009-03-31	2.3
2009-06-30	1.1
2009-09-30	-0.6
2009-12-31	-1.3
2010-03-31	-1.8
2010-06-30	-2.2
2010-09-30	-1.9
2010-12-31	-1.3
2011-03-31	-1.4
2011-06-30	-0.7
2011-09-30	-0.3
2011-12-31	-0.9
2012-03-31	-0.5
2012-06-30	-0.4
2012-09-30	0.1
2012-12-31	1.2
2013-03-31	2.5
2013-06-30	3.3
2013-09-30	4.5
2013-12-31	4.9
2014-03-31	5.4
2014-06-30	5.7
2014-09-30	6.1
2014-12-31	6.6
2015-03-31	7.1
2015-06-30	7.7
2015-09-30	8.1
2015-12-31	8.7
2016-03-31	9.8
2016-06-30	10.2
2016-09-30	10.4
2016-12-31	10.7
2017-03-31	10.2
2017-06-30	10.2
2017-09-30	10.4
2017-12-31	10.3
2018-03-31	9.7
2018-06-30	9.8
2018-09-30	8.8
2018-12-31	7.5
2019-03-31	7.2
2019-06-30	6.2
2019-09-30	6
2019-12-31	6.1
2020-03-31	3.7
2020-06-30	-3.8
2020-09-30	-4.6
2020-12-31	-7.5
2021-03-31	-8.5
2021-06-30	-2
2021-09-30	-1.4
2021-12-31	1.6
2022-03-31	5.1
2022-06-30	6.5
2022-09-30	7.1
2022-12-31	7.3
2023-03-31	7.6
2023-06-30	7.5
2023-09-30	7.9
2023-12-31	8.5