Quarter	Percent
1987-12-31	5.7
1988-03-31	4.4
1988-06-30	7.5
1988-09-30	12.6
1988-12-31	12.8
1989-03-31	16.8
1989-06-30	11.6
1989-09-30	17.8
1989-12-31	19.2
1990-03-31	15.2
1990-06-30	18.3
1990-09-30	12.3
1990-12-31	10.9
1991-03-31	7.4
1991-06-30	4.7
1991-09-30	0.5
1991-12-31	2.5
1992-03-31	1.8
1992-06-30	4.8
1992-09-30	4.9
1992-12-31	0.5
1993-03-31	-1.7
1993-06-30	-0.3
1993-09-30	2.1
1993-12-31	1
1994-03-31	3.1
1994-06-30	2.3
1994-09-30	-1.9
1994-12-31	0.9
1995-03-31	-0.7
1995-06-30	1.8
1995-09-30	11.7
1995-12-31	12.2
1996-03-31	15.8
1996-06-30	14.6
1996-09-30	8.9
1996-12-31	12.7
1997-03-31	7.3
1997-06-30	3.3
1997-09-30	5
1997-12-31	4.9
1998-03-31	7.4
1998-06-30	5.9
1998-09-30	3.6
1998-12-31	-2.7
1999-03-31	-2.1
1999-06-30	-3
1999-09-30	-5.1
1999-12-31	-1.3
2000-03-31	-1.3
2000-06-30	-2.2
2000-09-30	2.9
2000-12-31	-3.4
2001-03-31	-1.5
2001-06-30	0.7
2001-09-30	0.5
2001-12-31	-3.4
2002-03-31	-6
2002-06-30	-4.7
2002-09-30	-5.8
2002-12-31	-0.7
2003-03-31	-0.3
2003-06-30	-2.9
2003-09-30	-5
2003-12-31	0.2
2004-03-31	3.8
2004-06-30	5.4
2004-09-30	17
2004-12-31	9.6
2005-03-31	14.9
2005-06-30	12.4
2005-09-30	2.3
2005-12-31	3.7
2006-03-31	-1.3
2006-06-30	1.8
2006-09-30	4.4
2006-12-31	7.4
2007-03-31	6.5
2007-06-30	4.1
2007-09-30	10.9
2007-12-31	7.9
2008-03-31	13.7
2008-06-30	14
2008-09-30	6.8
2008-12-31	3.8
2009-03-31	-6.3
2009-06-30	-16.8
2009-09-30	-20.4
2009-12-31	-18.1
2010-03-31	-15
2010-06-30	-5.2
2010-09-30	-1.2
2010-12-31	-4.7
2011-03-31	-4.5
2011-06-30	-3.7
2011-09-30	-1.1
2011-12-31	-0.8
2012-03-31	1
2012-06-30	-2.4
2012-09-30	-4.7
2012-12-31	-3.9
2013-03-31	-3.5
2013-06-30	-0.3
2013-09-30	-1.7
2013-12-31	1
2014-03-31	-0.4
2014-06-30	3.2
2014-09-30	2.6
2014-12-31	2.6
2015-03-31	6.5
2015-06-30	5.5
2015-09-30	10.3
2015-12-31	11.1
2016-03-31	15.2
2016-06-30	13.8
2016-09-30	8.9
2016-12-31	8
2017-03-31	3.4
2017-06-30	0.2
2017-09-30	2.5
2017-12-31	2.3
2018-03-31	-2.5
2018-06-30	6
2018-09-30	-3.5
2018-12-31	1.9
2019-03-31	11.5
2019-06-30	-2.8
2019-09-30	12.1
2019-12-31	0.9
2020-03-31	2.4
2020-06-30	16.7
2020-09-30	7.3
2020-12-31	13
2021-03-31	2.8
2021-06-30	-12.3
2021-09-30	-12.1
2021-12-31	-12
2022-03-31	-7.8
2022-06-30	2.6
2022-09-30	9.6
2022-12-31	6.9
2023-03-31	3
2023-06-30	0.9
2023-09-30	-6.7
2023-12-31	-13.9