Quarter	Percent
1987-03-31	51.9
1987-06-30	-27.5
1987-09-30	20.2
1987-12-31	-20.4
1988-03-31	55.8
1988-06-30	-2.7
1988-09-30	11.4
1988-12-31	-2.5
1989-03-31	18.6
1989-06-30	-11.3
1989-09-30	20.6
1989-12-31	14.3
1990-03-31	42.6
1990-06-30	8
1990-09-30	-30.6
1990-12-31	-27.2
1991-03-31	92.2
1991-06-30	90.5
1991-09-30	-37.3
1991-12-31	-11.2
1992-03-31	24.3
1992-06-30	-28.5
1992-09-30	28.4
1992-12-31	-19.9
1993-03-31	19.4
1993-06-30	-3.6
1993-09-30	-20.9
1993-12-31	-2.3
1994-03-31	70.2
1994-06-30	-12
1994-09-30	-43.9
1994-12-31	16.7
1995-03-31	1.2
1995-06-30	6.9
1995-09-30	30.1
1995-12-31	185.3
1996-03-31	117.9
1996-06-30	-7.3
1996-09-30	-20.4
1996-12-31	3.3
1997-03-31	-6.3
1997-06-30	11.3
1997-09-30	-1
1997-12-31	-10.3
1998-03-31	-7.2
1998-06-30	-21.3
1998-09-30	-5.2
1998-12-31	41.9
1999-03-31	-31.2
1999-06-30	-17.5
1999-09-30	49.5
1999-12-31	-25.8
2000-03-31	52.4
2000-06-30	-28.6
2000-09-30	63
2000-12-31	10.2
2001-03-31	69.4
2001-06-30	-33.8
2001-09-30	-13.9
2001-12-31	-8.8
2002-03-31	24.4
2002-06-30	15.2
2002-09-30	-4
2002-12-31	12.3
2003-03-31	-28.4
2003-06-30	62.1
2003-09-30	-13.7
2003-12-31	5.1
2004-03-31	12
2004-06-30	-9.2
2004-09-30	-27
2004-12-31	16.1
2005-03-31	-7.8
2005-06-30	-10.7
2005-09-30	-22.4
2005-12-31	23.8
2006-03-31	30.6
2006-06-30	10.2
2006-09-30	-7.9
2006-12-31	161.9
2007-03-31	-20.2
2007-06-30	-5.2
2007-09-30	-26.6
2007-12-31	11
2008-03-31	36.6
2008-06-30	2.9
2008-09-30	9.2
2008-12-31	4.8
2009-03-31	3.5
2009-06-30	-4.5
2009-09-30	-12.4
2009-12-31	0.5
2010-03-31	2.4
2010-06-30	-13.8
2010-09-30	-19
2010-12-31	0.1
2011-03-31	-12.3
2011-06-30	-4.9
2011-09-30	5.9
2011-12-31	-1
2012-03-31	-16.3
2012-06-30	20.2
2012-09-30	3.1
2012-12-31	2.7
2013-03-31	-6.4
2013-06-30	-4.2
2013-09-30	11.2
2013-12-31	3.9
2014-03-31	3.1
2014-06-30	-3.5
2014-09-30	3.1
2014-12-31	-3.9
2015-03-31	25.2
2015-06-30	-18.6
2015-09-30	-2.4
2015-12-31	6.3
2016-03-31	13.2
2016-06-30	7.7
2016-09-30	1
2016-12-31	-1.3
2017-03-31	-14.9
2017-06-30	1.3
2017-09-30	-0.5
2017-12-31	-1
2018-03-31	3.8
2018-06-30	5
2018-09-30	8.6
2018-12-31	-1.4
2019-03-31	19.3
2019-06-30	-3.7
2019-09-30	15.1
2019-12-31	7.8
2020-03-31	26.6
2020-06-30	-16.4
2020-09-30	-3.5
2020-12-31	-21.7
2021-03-31	8.7
2021-06-30	-11.8
2021-09-30	32.3
2021-12-31	-14.1
2022-03-31	-7.3
2022-06-30	1
2022-09-30	20.5
2022-12-31	-7.2
2023-03-31	28.1
2023-06-30	-10.7
2023-09-30	12
2023-12-31	9.1