Quarter	Percent
1998-12-31	-63.1
1999-03-31	39.5
1999-06-30	210.2
1999-09-30	454.1
1999-12-31	5.4
2000-03-31	67.6
2000-06-30	523.6
2000-09-30	26.4
2000-12-31	134.7
2001-03-31	247.2
2001-06-30	27.1
2001-09-30	463.4
2001-12-31	-64.2
2002-03-31	92.9
2002-06-30	126
2002-09-30	11.7
2002-12-31	-39.4
2003-03-31	131.1
2003-06-30	48.8
2003-09-30	36.7
2003-12-31	-39.9
2004-03-31	988.9
2004-06-30	28.4
2004-09-30	6.8
2004-12-31	-25.1
2005-03-31	153.6
2005-06-30	-1
2005-09-30	19.6
2005-12-31	35.2
2006-03-31	87.6
2006-06-30	11.1
2006-09-30	11
2006-12-31	-23.7
2007-03-31	49.2
2007-06-30	145.3
2007-09-30	115
2007-12-31	38.3
2008-03-31	145.2
2008-06-30	-21.7
2008-09-30	85.6
2008-12-31	-36
2009-03-31	-2.1
2009-06-30	-0.8
2009-09-30	-16.9
2009-12-31	15.3
2010-03-31	33.6
2010-06-30	14.2
2010-09-30	-28.9
2010-12-31	-21.7
2011-03-31	-1.4
2011-06-30	40.5
2011-09-30	0.2
2011-12-31	-35.7
2012-03-31	8.3
2012-06-30	2.1
2012-09-30	5
2012-12-31	2.4
2013-03-31	19.8
2013-06-30	-13.6
2013-09-30	22.1
2013-12-31	-14
2014-03-31	-14.2
2014-06-30	34.5
2014-09-30	4
2014-12-31	-28.9
2015-03-31	29
2015-06-30	1
2015-09-30	-4.9
2015-12-31	-15.9
2016-03-31	37.4
2016-06-30	54.3
2016-09-30	-20.7
2016-12-31	-7.6
2017-03-31	68
2017-06-30	12.6
2017-09-30	13.7
2017-12-31	-5.5
2018-03-31	-3.5
2018-06-30	-16.1
2018-09-30	23
2018-12-31	47.6
2019-03-31	-32.9
2019-06-30	-14.8
2019-09-30	44.9
2019-12-31	-1.4
2020-03-31	66
2020-06-30	-17.1
2020-09-30	18
2020-12-31	-6.3
2021-03-31	-6.9
2021-06-30	-5
2021-09-30	20.6
2021-12-31	19.6
2022-03-31	-2
2022-06-30	10.1
2022-09-30	12.1
2022-12-31	-19.8
2023-03-31	3.4
2023-06-30	0.4
2023-09-30	3.6
2023-12-31	13.9