Quarter	Percent
1998-03-31	106.8
1998-06-30	212.5
1998-09-30	40.4
1998-12-31	-60.3
1999-03-31	232
1999-06-30	-67.4
1999-09-30	486.2
1999-12-31	-35.8
2000-03-31	-63.5
2000-06-30	204.5
2000-09-30	-8.5
2000-12-31	35.1
2001-03-31	65.5
2001-06-30	54
2001-09-30	-36.5
2001-12-31	102.9
2002-03-31	-67.7
2002-06-30	-40.3
2002-09-30	330.6
2002-12-31	-55.3
2003-03-31	-36.4
2003-06-30	465.6
2003-09-30	74.3
2003-12-31	45.8
2004-03-31	-10.2
2004-06-30	-42.9
2004-09-30	-20.6
2004-12-31	55.6
2005-03-31	32.8
2005-06-30	175.2
2005-09-30	-75
2005-12-31	-12
2006-03-31	103.9
2006-06-30	112.9
2006-09-30	53.4
2006-12-31	145.2
2007-03-31	-28.7
2007-06-30	-10.5
2007-09-30	-11.2
2007-12-31	-41.4
2008-03-31	54.2
2008-06-30	-34.2
2008-09-30	-23.6
2008-12-31	17
2009-03-31	-45.1
2009-06-30	7
2009-09-30	-3.8
2009-12-31	64.5
2010-03-31	-31.4
2010-06-30	-45.6
2010-09-30	0.6
2010-12-31	93.6
2011-03-31	-18.9
2011-06-30	1.2
2011-09-30	-16.2
2011-12-31	12.9
2012-03-31	-4.7
2012-06-30	7.9
2012-09-30	-46.7
2012-12-31	60.7
2013-03-31	105.9
2013-06-30	-19.4
2013-09-30	-26.6
2013-12-31	7.3
2014-03-31	7
2014-06-30	13.6
2014-09-30	19.8
2014-12-31	8.9
2015-03-31	-18.7
2015-06-30	22.1
2015-09-30	-20.5
2015-12-31	-18
2016-03-31	24
2016-06-30	10
2016-09-30	-4.9
2016-12-31	35.1
2017-03-31	-34.8
2017-06-30	67.1
2017-09-30	-49.5
2017-12-31	99
2018-03-31	-31.1
2018-06-30	4.9
2018-09-30	-1
2018-12-31	58.9
2019-03-31	56.1
2019-06-30	-21.9
2019-09-30	-10.1
2019-12-31	83.4
2020-03-31	3
2020-06-30	16.8
2020-09-30	223.9
2020-12-31	9.6
2021-03-31	-16.6
2021-06-30	-3.6
2021-09-30	-43.4
2021-12-31	25.6
2022-03-31	-39.8
2022-06-30	18.9
2022-09-30	-9.3
2022-12-31	42.6
2023-03-31	-20.8
2023-06-30	62.4
2023-09-30	-50.7
2023-12-31	-12.3