Quarter	Percent
1987-12-31	10.8
1988-03-31	12.9
1988-06-30	16.9
1988-09-30	17.4
1988-12-31	16.6
1989-03-31	15.6
1989-06-30	10.6
1989-09-30	28.5
1989-12-31	26.6
1990-03-31	20.4
1990-06-30	20.6
1990-09-30	7.1
1990-12-31	8.2
1991-03-31	7
1991-06-30	4.7
1991-09-30	-0.4
1991-12-31	-3
1992-03-31	-2.6
1992-06-30	0
1992-09-30	1.3
1992-12-31	-1
1993-03-31	-2.6
1993-06-30	-3.2
1993-09-30	-3.1
1993-12-31	-7.8
1994-03-31	-4.2
1994-06-30	-6.3
1994-09-30	-7.2
1994-12-31	-2.9
1995-03-31	-2.5
1995-06-30	0.5
1995-09-30	7.6
1995-12-31	10.4
1996-03-31	11.8
1996-06-30	10.8
1996-09-30	5.8
1996-12-31	8.5
1997-03-31	1.9
1997-06-30	3.8
1997-09-30	4.1
1997-12-31	2.5
1998-03-31	7.5
1998-06-30	6.2
1998-09-30	7.3
1998-12-31	3.6
1999-03-31	3.4
1999-06-30	1.2
1999-09-30	-0.4
1999-12-31	-3.3
2000-03-31	-1.5
2000-06-30	-0.9
2000-09-30	1.2
2000-12-31	0.5
2001-03-31	0.8
2001-06-30	-0.6
2001-09-30	-0.8
2001-12-31	-5.3
2002-03-31	-6.3
2002-06-30	-4.3
2002-09-30	-4.5
2002-12-31	7.1
2003-03-31	5.6
2003-06-30	4.5
2003-09-30	2.1
2003-12-31	-0.1
2004-03-31	4.3
2004-06-30	6.3
2004-09-30	12.1
2004-12-31	5.7
2005-03-31	10
2005-06-30	12.4
2005-09-30	11.5
2005-12-31	10.9
2006-03-31	6.5
2006-06-30	3.4
2006-09-30	1.3
2006-12-31	4.6
2007-03-31	2
2007-06-30	6.2
2007-09-30	21.6
2007-12-31	18.9
2008-03-31	24.4
2008-06-30	16.8
2008-09-30	1.6
2008-12-31	0.5
2009-03-31	-3.9
2009-06-30	-10.4
2009-09-30	-13.6
2009-12-31	-12.9
2010-03-31	-13.8
2010-06-30	-7.9
2010-09-30	-5
2010-12-31	-5.2
2011-03-31	-3.9
2011-06-30	-6.6
2011-09-30	-4.4
2011-12-31	-6.1
2012-03-31	-5.4
2012-06-30	-4.3
2012-09-30	-5.8
2012-12-31	-5.8
2013-03-31	-5.8
2013-06-30	-4.8
2013-09-30	-4.5
2013-12-31	1.2
2014-03-31	2.3
2014-06-30	5.5
2014-09-30	3.3
2014-12-31	4.5
2015-03-31	5.5
2015-06-30	6.1
2015-09-30	11.2
2015-12-31	10.7
2016-03-31	12.6
2016-06-30	11.2
2016-09-30	5.6
2016-12-31	5
2017-03-31	1.9
2017-06-30	0.7
2017-09-30	5.6
2017-12-31	3.8
2018-03-31	5
2018-06-30	4.5
2018-09-30	2
2018-12-31	5.5
2019-03-31	5.2
2019-06-30	5.1
2019-09-30	5.3
2019-12-31	-0.4
2020-03-31	5.8
2020-06-30	15.5
2020-09-30	9.9
2020-12-31	14.2
2021-03-31	8.8
2021-06-30	-4.3
2021-09-30	1.3
2021-12-31	2.9
2022-03-31	-0.2
2022-06-30	2.9
2022-09-30	1.1
2022-12-31	-2.4
2023-03-31	-4.5
2023-06-30	-4.2
2023-09-30	-4.8
2023-12-31	-8.3