Quarter	Percent, Seasonally adjusted
1987-06-30	18.6
1987-09-30	18.6
1987-12-31	19.4
1988-03-31	20.8
1988-06-30	22
1988-09-30	23.6
1988-12-31	15.9
1989-03-31	16.7
1989-06-30	15.7
1989-09-30	16.3
1989-12-31	15.8
1990-03-31	14.6
1990-06-30	12.8
1990-09-30	11.4
1990-12-31	11.1
1991-03-31	9.8
1991-06-30	8.8
1991-09-30	7.7
1991-12-31	6.5
1992-03-31	6.5
1992-06-30	5.2
1992-09-30	5.3
1992-12-31	3.4
1993-03-31	3.9
1993-06-30	4.4
1993-09-30	5.2
1993-12-31	5.6
1994-03-31	5.5
1994-06-30	6.3
1994-09-30	6.2
1994-12-31	5.9
1995-03-31	5.8
1995-06-30	5
1995-09-30	5
1995-12-31	5.2
1996-03-31	5.6
1996-06-30	6.2
1996-09-30	6.8
1996-12-31	7.4
1997-03-31	7.4
1997-06-30	7.5
1997-09-30	6.4
1997-12-31	7.5
1998-03-31	7.6
1998-06-30	7.5
1998-09-30	7.9
1998-12-31	7.2
1999-03-31	8.6
1999-06-30	9
1999-09-30	9.7
1999-12-31	9.7
2000-03-31	9.7
2000-06-30	9.3
2000-09-30	7.8
2000-12-31	8.7
2001-03-31	9.3
2001-06-30	10.7
2001-09-30	11
2001-12-31	11.5
2002-03-31	12.5
2002-06-30	13.3
2002-09-30	14.1
2002-12-31	14.7
2003-03-31	14.1
2003-06-30	14.1
2003-09-30	15.3
2003-12-31	15.5
2004-03-31	15.1
2004-06-30	14.3
2004-09-30	12.8
2004-12-31	10.9
2005-03-31	10.3
2005-06-30	10.3
2005-09-30	9.8
2005-12-31	9.9
2006-03-31	10.1
2006-06-30	10.3
2006-09-30	10.4
2006-12-31	11.1
2007-03-31	9.7
2007-06-30	9.5
2007-09-30	10.1
2007-12-31	7.6
2008-03-31	6.3
2008-06-30	4
2008-09-30	1.7
2008-12-31	0.7
2009-03-31	0.6
2009-06-30	0.4
2009-09-30	0.1
2009-12-31	0.9
2010-03-31	0.5
2010-06-30	0.1
2010-09-30	0.1
2010-12-31	0.4
2011-03-31	0.3
2011-06-30	0.5
2011-09-30	0.4
2011-12-31	0.4
2012-03-31	1.1
2012-06-30	0.9
2012-09-30	0.8
2012-12-31	1
2013-03-31	1
2013-06-30	1.4
2013-09-30	1.9
2013-12-31	1.9
2014-03-31	2.4
2014-06-30	2.6
2014-09-30	2.4
2014-12-31	2.3
2015-03-31	2.6
2015-06-30	3.1
2015-09-30	4.1
2015-12-31	4.2
2016-03-31	5.5
2016-06-30	3
2016-09-30	3.7
2016-12-31	4
2017-03-31	4.3
2017-06-30	4.2
2017-09-30	4.5
2017-12-31	4.3
2018-03-31	3.9
2018-06-30	4.2
2018-09-30	3.8
2018-12-31	3.5
2019-03-31	3.7
2019-06-30	3.5
2019-09-30	4
2019-12-31	4.2
2020-03-31	3
2020-06-30	-2.6
2020-09-30	3
2020-12-31	3.7
2021-03-31	5.3
2021-06-30	6.2
2021-09-30	3.4
2021-12-31	2.8
2022-03-31	5.1
2022-06-30	4.5
2022-09-30	4.3
2022-12-31	2.6
2023-03-31	1.5
2023-06-30	0.5
2023-09-30	1
2023-12-31	0.8