Quarter	Percent
1987-03-31	3.3
1987-06-30	19.2
1987-09-30	-0.7
1987-12-31	18.9
1988-03-31	1
1988-06-30	-6.5
1988-09-30	1.7
1988-12-31	2.7
1989-03-31	9.6
1989-06-30	16.7
1989-09-30	-7
1989-12-31	11.7
1990-03-31	7.9
1990-06-30	11
1990-09-30	-12.5
1990-12-31	-0.6
1991-03-31	-7.6
1991-06-30	-10.9
1991-09-30	-3.1
1991-12-31	3.8
1992-03-31	-11.6
1992-06-30	1.7
1992-09-30	2.2
1992-12-31	-17.8
1993-03-31	-4.8
1993-06-30	-1.8
1993-09-30	-8
1993-12-31	33.2
1994-03-31	29.4
1994-06-30	4.6
1994-09-30	6.4
1994-12-31	-3.8
1995-03-31	-0.1
1995-06-30	-3.8
1995-09-30	4.9
1995-12-31	9.4
1996-03-31	6.1
1996-06-30	-18.5
1996-09-30	15.4
1996-12-31	11.8
1997-03-31	6.3
1997-06-30	10.5
1997-09-30	102.9
1997-12-31	7.6
1998-03-31	15.9
1998-06-30	4.2
1998-09-30	-12
1998-12-31	16.8
1999-03-31	-2.3
1999-06-30	9.2
1999-09-30	-10.3
1999-12-31	11.3
2000-03-31	-2.3
2000-06-30	5.7
2000-09-30	10.3
2000-12-31	1.4
2001-03-31	-4.4
2001-06-30	-6.5
2001-09-30	4.6
2001-12-31	-14
2002-03-31	-6.6
2002-06-30	-9
2002-09-30	22.4
2002-12-31	-4.2
2003-03-31	2.4
2003-06-30	1.8
2003-09-30	18.6
2003-12-31	5.6
2004-03-31	-1.8
2004-06-30	11
2004-09-30	17.5
2004-12-31	-10.9
2005-03-31	2.6
2005-06-30	2.8
2005-09-30	-9.8
2005-12-31	20.2
2006-03-31	-23.2
2006-06-30	6.3
2006-09-30	9.3
2006-12-31	26.6
2007-03-31	-6.5
2007-06-30	0.6
2007-09-30	10.9
2007-12-31	9.7
2008-03-31	-7.4
2008-06-30	-4.1
2008-09-30	1.2
2008-12-31	1.8
2009-03-31	-4.3
2009-06-30	-11
2009-09-30	-0.8
2009-12-31	-1.3
2010-03-31	-5.9
2010-06-30	3.1
2010-09-30	-4.8
2010-12-31	1.2
2011-03-31	-1.7
2011-06-30	8.1
2011-09-30	11.6
2011-12-31	7.1
2012-03-31	-8
2012-06-30	5.6
2012-09-30	-6.5
2012-12-31	2.1
2013-03-31	17
2013-06-30	-3.9
2013-09-30	-13.1
2013-12-31	-8.8
2014-03-31	-21.4
2014-06-30	-11.4
2014-09-30	16.9
2014-12-31	-1.5
2015-03-31	14
2015-06-30	-16
2015-09-30	-9.4
2015-12-31	0.4
2016-03-31	25.1
2016-06-30	14.3
2016-09-30	13.2
2016-12-31	4.5
2017-03-31	3.8
2017-06-30	3.3
2017-09-30	-4
2017-12-31	-1.8
2018-03-31	0.6
2018-06-30	8.7
2018-09-30	2.6
2018-12-31	3.2
2019-03-31	2.1
2019-06-30	1.5
2019-09-30	16.7
2019-12-31	-9.2
2020-03-31	15.8
2020-06-30	1
2020-09-30	-8.2
2020-12-31	3.3
2021-03-31	-15.7
2021-06-30	1.5
2021-09-30	4.7
2021-12-31	-6.9
2022-03-31	5.3
2022-06-30	2.2
2022-09-30	20.4
2022-12-31	-20.9
2023-03-31	-11.5
2023-06-30	5.1
2023-09-30	0.9
2023-12-31	-10