Quarter	Percent
1998-03-31	7.9
1998-06-30	48.7
1998-09-30	-3.6
1998-12-31	-33.9
1999-03-31	98.2
1999-06-30	76.9
1999-09-30	-51.6
1999-12-31	102.5
2000-03-31	-3.6
2000-06-30	41.2
2000-09-30	90.3
2000-12-31	-34.6
2001-03-31	35
2001-06-30	45.8
2001-09-30	-46.8
2001-12-31	23.9
2002-03-31	-33.2
2002-06-30	32.2
2002-09-30	55.9
2002-12-31	-11
2003-03-31	-18.2
2003-06-30	21.4
2003-09-30	10.5
2003-12-31	8.3
2004-03-31	2.4
2004-06-30	24.2
2004-09-30	-21.1
2004-12-31	-10.1
2005-03-31	65.7
2005-06-30	-32.7
2005-09-30	-23.1
2005-12-31	-0.8
2006-03-31	65.3
2006-06-30	6.2
2006-09-30	-10.2
2006-12-31	4.1
2007-03-31	63.9
2007-06-30	50.4
2007-09-30	-32.1
2007-12-31	-39.5
2008-03-31	-14.4
2008-06-30	27.2
2008-09-30	-24.9
2008-12-31	-34.5
2009-03-31	0.1
2009-06-30	-13.6
2009-09-30	7.4
2009-12-31	-3.1
2010-03-31	43.4
2010-06-30	-14.6
2010-09-30	19.9
2010-12-31	-10.2
2011-03-31	42.5
2011-06-30	6.6
2011-09-30	-3.9
2011-12-31	-9.6
2012-03-31	20.5
2012-06-30	8.7
2012-09-30	-5.8
2012-12-31	14.9
2013-03-31	23.6
2013-06-30	2.1
2013-09-30	-1.1
2013-12-31	-0.6
2014-03-31	0.5
2014-06-30	-13.7
2014-09-30	9.9
2014-12-31	24.8
2015-03-31	8.4
2015-06-30	0
2015-09-30	-9.2
2015-12-31	7.7
2016-03-31	42.5
2016-06-30	-23.8
2016-09-30	-6.4
2016-12-31	1.6
2017-03-31	23.1
2017-06-30	8.9
2017-09-30	31.6
2017-12-31	2.1
2018-03-31	-4
2018-06-30	13.9
2018-09-30	12.1
2018-12-31	22.9
2019-03-31	3.7
2019-06-30	-12.4
2019-09-30	-7.3
2019-12-31	17.5
2020-03-31	49.5
2020-06-30	99.3
2020-09-30	-26.1
2020-12-31	40
2021-03-31	-9.9
2021-06-30	11.3
2021-09-30	11.9
2021-12-31	-9.3
2022-03-31	11.6
2022-06-30	0.2
2022-09-30	21.4
2022-12-31	-26.1
2023-03-31	-7.7
2023-06-30	3.6
2023-09-30	-0.3
2023-12-31	-9