Quarter	Percent
1998-03-31	83.1
1998-06-30	12
1998-09-30	-35.9
1998-12-31	70.5
1999-03-31	-7.1
1999-06-30	35.6
1999-09-30	-34.3
1999-12-31	49
2000-03-31	-0.5
2000-06-30	29
2000-09-30	68.9
2000-12-31	-7.3
2001-03-31	-16.8
2001-06-30	-21.5
2001-09-30	25.3
2001-12-31	-45.7
2002-03-31	-19.9
2002-06-30	-30.2
2002-09-30	134.4
2002-12-31	-31.2
2003-03-31	8.2
2003-06-30	12.5
2003-09-30	94
2003-12-31	22.5
2004-03-31	-8.1
2004-06-30	48
2004-09-30	93.4
2004-12-31	-36.8
2005-03-31	9.7
2005-06-30	12.2
2005-09-30	-28.9
2005-12-31	109.6
2006-03-31	-61
2006-06-30	27.8
2006-09-30	28.2
2006-12-31	155.2
2007-03-31	-18.6
2007-06-30	3.5
2007-09-30	51
2007-12-31	36.5
2008-03-31	-12.4
2008-06-30	-4.3
2008-09-30	8.1
2008-12-31	-4
2009-03-31	-19.5
2009-06-30	-34.8
2009-09-30	-7.2
2009-12-31	-5
2010-03-31	-17.1
2010-06-30	48
2010-09-30	-23.9
2010-12-31	-6.1
2011-03-31	-21.5
2011-06-30	26
2011-09-30	98.1
2011-12-31	39.4
2012-03-31	-27.5
2012-06-30	29.3
2012-09-30	-28.6
2012-12-31	2.1
2013-03-31	74.6
2013-06-30	-21.9
2013-09-30	-36.7
2013-12-31	-39.7
2014-03-31	-59.3
2014-06-30	-29.1
2014-09-30	117.8
2014-12-31	5.5
2015-03-31	101.5
2015-06-30	-36.8
2015-09-30	-20.6
2015-12-31	-8.7
2016-03-31	133.6
2016-06-30	64.2
2016-09-30	14.8
2016-12-31	-5.3
2017-03-31	9.9
2017-06-30	7.3
2017-09-30	-5.8
2017-12-31	-10.8
2018-03-31	7.9
2018-06-30	16.1
2018-09-30	3.5
2018-12-31	18.5
2019-03-31	11.7
2019-06-30	-3.2
2019-09-30	92.3
2019-12-31	-35.6
2020-03-31	93.9
2020-06-30	4.2
2020-09-30	-29.5
2020-12-31	17.3
2021-03-31	-48.6
2021-06-30	2.1
2021-09-30	19.6
2021-12-31	-17.1
2022-03-31	12.4
2022-06-30	1.1
2022-09-30	113.9
2022-12-31	-59.8
2023-03-31	-43
2023-06-30	28.1
2023-09-30	14.1
2023-12-31	-39.4