Quarter	Percent
1983-09-30	16.2
1983-12-31	14.1
1984-03-31	15
1984-06-30	14.4
1984-09-30	15.6
1984-12-31	14
1985-03-31	12.2
1985-06-30	12.5
1985-09-30	10.2
1985-12-31	9
1986-03-31	7.4
1986-06-30	7
1986-09-30	7.7
1986-12-31	8.5
1987-03-31	11
1987-06-30	10.7
1987-09-30	9.4
1987-12-31	7.7
1988-03-31	6.7
1988-06-30	5.8
1988-09-30	5.2
1988-12-31	4.2
1989-03-31	1.7
1989-06-30	0.1
1989-09-30	-2.9
1989-12-31	-4
1990-03-31	-4.5
1990-06-30	-3.4
1990-09-30	-0.3
1990-12-31	2.3
1991-03-31	3.8
1991-06-30	4.7
1991-09-30	5.6
1991-12-31	6
1992-03-31	8.5
1992-06-30	10.8
1992-09-30	11.9
1992-12-31	12.9
1993-03-31	10.9
1993-06-30	8.6
1993-09-30	6.8
1993-12-31	6.9
1994-03-31	9.4
1994-06-30	10.9
1994-09-30	11
1994-12-31	9.8
1995-03-31	7.2
1995-06-30	5.6
1995-09-30	5.2
1995-12-31	6.3
1996-03-31	9.9
1996-06-30	11.7
1996-09-30	13.2
1996-12-31	12.6
1997-03-31	8.4
1997-06-30	5.6
1997-09-30	3.9
1997-12-31	2.6
1998-03-31	2.5
1998-06-30	2.8
1998-09-30	2.5
1998-12-31	2.1
1999-03-31	0.6
1999-06-30	-0.6
1999-09-30	-1.7
1999-12-31	-2.1
2000-03-31	-1.6
2000-06-30	-0.9
2000-09-30	0
2000-12-31	-0.4
2001-03-31	-1.1
2001-06-30	-2
2001-09-30	-2.4
2001-12-31	-1.2
2002-03-31	-0.5
2002-06-30	-0.8
2002-09-30	-0.6
2002-12-31	-0.9
2003-03-31	1.2
2003-06-30	5.2
2003-09-30	6.4
2003-12-31	7.2
2004-03-31	5.4
2004-06-30	3
2004-09-30	2.4
2004-12-31	2.3
2005-03-31	3
2005-06-30	3.6
2005-09-30	5.2
2005-12-31	6.2
2006-03-31	7.1
2006-06-30	7.7
2006-09-30	6.8
2006-12-31	8.4
2007-03-31	7.6
2007-06-30	9.1
2007-09-30	8.7
2007-12-31	7.3
2008-03-31	7.4
2008-06-30	5.7
2008-09-30	8.1
2008-12-31	13.1
2009-03-31	14.7
2009-06-30	11.8
2009-09-30	6.7
2009-12-31	3.2
2010-03-31	1.6
2010-06-30	5.5
2010-09-30	7.4
2010-12-31	2
2011-03-31	0.1
2011-06-30	1.4
2011-09-30	1.7
2011-12-31	3.9
2012-03-31	4.1
2012-06-30	0
2012-09-30	-1.4
2012-12-31	-1.7
2013-03-31	-0.7
2013-06-30	1.2
2013-09-30	2.6
2013-12-31	3
2014-03-31	3.3
2014-06-30	3.7
2014-09-30	5
2014-12-31	6.2
2015-03-31	17.2
2015-06-30	19.9
2015-09-30	19.8
2015-12-31	20.1
2016-03-31	9.1
2016-06-30	4.3
2016-09-30	4
2016-12-31	6.7
2017-03-31	8.6
2017-06-30	10
2017-09-30	9.7
2017-12-31	7.3
2018-03-31	6.5
2018-06-30	7.4
2018-09-30	7.8
2018-12-31	7.6
2019-03-31	6.8
2019-06-30	6.1
2019-09-30	6.3
2019-12-31	6.1
2020-03-31	6.9
2020-06-30	14.2
2020-09-30	26.1
2020-12-31	18.3
2021-03-31	13.2
2021-06-30	4.6
2021-09-30	-6.5
2021-12-31	-1.4
2022-03-31	2.3
2022-06-30	3.2
2022-09-30	3.9
2022-12-31	3.5
2023-03-31	5.1
2023-06-30	5.5
2023-09-30	8.1
2023-12-31	9.2