Quarter	Percent
1998-12-31	-15.2
1999-03-31	-20.1
1999-06-30	-19.9
1999-09-30	-18.1
1999-12-31	-22.9
2000-03-31	124.2
2000-06-30	230.3
2000-09-30	78
2000-12-31	449.2
2001-03-31	-28.2
2001-06-30	-42.2
2001-09-30	1.2
2001-12-31	-40.7
2002-03-31	18.9
2002-06-30	41.8
2002-09-30	68.9
2002-12-31	26.5
2003-03-31	68.6
2003-06-30	31.2
2003-09-30	20
2003-12-31	18.6
2004-03-31	32.8
2004-06-30	15.8
2004-09-30	58.3
2004-12-31	63.9
2005-03-31	-16.7
2005-06-30	49.9
2005-09-30	14
2005-12-31	7.2
2006-03-31	36.1
2006-06-30	-10.9
2006-09-30	-2.6
2006-12-31	-12
2007-03-31	40.6
2007-06-30	6.1
2007-09-30	-14.6
2007-12-31	6.9
2008-03-31	4.1
2008-06-30	-3.9
2008-09-30	109
2008-12-31	66.7
2009-03-31	73.4
2009-06-30	166.2
2009-09-30	13.4
2009-12-31	7.9
2010-03-31	-7.5
2010-06-30	-23.9
2010-09-30	-8
2010-12-31	-16.7
2011-03-31	9.1
2011-06-30	8.7
2011-09-30	12.5
2011-12-31	21.2
2012-03-31	-9
2012-06-30	-6.9
2012-09-30	-6.7
2012-12-31	-15.2
2013-03-31	-0.8
2013-06-30	17.4
2013-09-30	11
2013-12-31	16.7
2014-03-31	20.9
2014-06-30	5
2014-09-30	2.8
2014-12-31	-4.3
2015-03-31	4.4
2015-06-30	-13.8
2015-09-30	-17.3
2015-12-31	-7.4
2016-03-31	-29
2016-06-30	-8.4
2016-09-30	2.8
2016-12-31	-2.4
2017-03-31	6.2
2017-06-30	-1.2
2017-09-30	8.9
2017-12-31	17.1
2018-03-31	50.3
2018-06-30	6.5
2018-09-30	-0.3
2018-12-31	-16.3
2019-03-31	-26.1
2019-06-30	-3.5
2019-09-30	-20.5
2019-12-31	42.9
2020-03-31	6.7
2020-06-30	13.5
2020-09-30	-5.3
2020-12-31	-26.3
2021-03-31	-20.6
2021-06-30	-17.2
2021-09-30	11.5
2021-12-31	13.4
2022-03-31	13.6
2022-06-30	20.4
2022-09-30	17.3
2022-12-31	-4.8
2023-03-31	19.7
2023-06-30	-1.7
2023-09-30	-1.4
2023-12-31	1.3