Quarter	Percent
1998-03-31	4.1
1998-06-30	2.6
1998-09-30	8.2
1998-12-31	3.7
1999-03-31	16.3
1999-06-30	71.3
1999-09-30	-9
1999-12-31	11.3
2000-03-31	-6.9
2000-06-30	29.8
2000-09-30	1.9
2000-12-31	-16.3
2001-03-31	55.6
2001-06-30	25.5
2001-09-30	9.3
2001-12-31	3.2
2002-03-31	37.8
2002-06-30	20.4
2002-09-30	22.6
2002-12-31	51.5
2003-03-31	-1.1
2003-06-30	0.8
2003-09-30	-40.9
2003-12-31	-2.3
2004-03-31	-65.9
2004-06-30	-28
2004-09-30	73.7
2004-12-31	-11.7
2005-03-31	-0.8
2005-06-30	2.7
2005-09-30	-7.4
2005-12-31	10.5
2006-03-31	42.4
2006-06-30	2.8
2006-09-30	111.9
2006-12-31	-11.8
2007-03-31	4.4
2007-06-30	10.4
2007-09-30	-2.2
2007-12-31	26.4
2008-03-31	10.1
2008-06-30	8.8
2008-09-30	7.5
2008-12-31	24.7
2009-03-31	10.9
2009-06-30	-8.8
2009-09-30	-22.1
2009-12-31	-1.8
2010-03-31	-25.4
2010-06-30	10.2
2010-09-30	-1.5
2010-12-31	5.1
2011-03-31	22.1
2011-06-30	-8.4
2011-09-30	11.9
2011-12-31	22.9
2012-03-31	-21.3
2012-06-30	-7.5
2012-09-30	5.3
2012-12-31	-21
2013-03-31	-7.3
2013-06-30	-24.8
2013-09-30	-2.2
2013-12-31	28.7
2014-03-31	-31
2014-06-30	-4.1
2014-09-30	1.8
2014-12-31	16.5
2015-03-31	8.4
2015-06-30	-1.8
2015-09-30	2.9
2015-12-31	8.8
2016-03-31	-6.9
2016-06-30	-15.3
2016-09-30	6.4
2016-12-31	-9.6
2017-03-31	-9.9
2017-06-30	-2.9
2017-09-30	21.8
2017-12-31	-3.2
2018-03-31	-5.1
2018-06-30	-6.7
2018-09-30	0.8
2018-12-31	6.4
2019-03-31	1.5
2019-06-30	13.9
2019-09-30	23.2
2019-12-31	-11.6
2020-03-31	135.2
2020-06-30	17.7
2020-09-30	2
2020-12-31	0.5
2021-03-31	10.4
2021-06-30	2.7
2021-09-30	-22.1
2021-12-31	-3.5
2022-03-31	1.2
2022-06-30	44.2
2022-09-30	29.1
2022-12-31	-28.8
2023-03-31	6
2023-06-30	-11.8
2023-09-30	-4.2
2023-12-31	-25.9