Quarter	Percent
1998-03-31	27.4
1998-06-30	-11.5
1998-09-30	7
1998-12-31	-39.9
1999-03-31	37
1999-06-30	-2.8
1999-09-30	10.2
1999-12-31	-3.2
2000-03-31	71.8
2000-06-30	1.6
2000-09-30	0.1
2000-12-31	23
2001-03-31	47.2
2001-06-30	-18.3
2001-09-30	17.4
2001-12-31	8.7
2002-03-31	5.9
2002-06-30	29.9
2002-09-30	-2.2
2002-12-31	-2.2
2003-03-31	16
2003-06-30	17.4
2003-09-30	26.1
2003-12-31	9.3
2004-03-31	62.2
2004-06-30	3.2
2004-09-30	2.3
2004-12-31	9.4
2005-03-31	16.5
2005-06-30	6.4
2005-09-30	1.1
2005-12-31	17
2006-03-31	57
2006-06-30	7.3
2006-09-30	3.2
2006-12-31	16.2
2007-03-31	66.6
2007-06-30	23.1
2007-09-30	24.1
2007-12-31	11.1
2008-03-31	39.8
2008-06-30	-11.5
2008-09-30	16.5
2008-12-31	0.1
2009-03-31	3.6
2009-06-30	-2.4
2009-09-30	-7
2009-12-31	5.9
2010-03-31	8.1
2010-06-30	-7.3
2010-09-30	5
2010-12-31	-5.6
2011-03-31	1.1
2011-06-30	4.8
2011-09-30	4.5
2011-12-31	-30.2
2012-03-31	12.4
2012-06-30	-7.1
2012-09-30	1.1
2012-12-31	7.4
2013-03-31	13.9
2013-06-30	-10.8
2013-09-30	0.5
2013-12-31	-15.7
2014-03-31	-31
2014-06-30	-10.1
2014-09-30	-6.2
2014-12-31	-24.8
2015-03-31	24.8
2015-06-30	-8.2
2015-09-30	1.7
2015-12-31	-17.2
2016-03-31	14.6
2016-06-30	19.2
2016-09-30	-12.2
2016-12-31	-8.4
2017-03-31	31.2
2017-06-30	4.3
2017-09-30	3.1
2017-12-31	-4.8
2018-03-31	6
2018-06-30	1.3
2018-09-30	10.1
2018-12-31	14.9
2019-03-31	-11.1
2019-06-30	-0.9
2019-09-30	23.9
2019-12-31	2.7
2020-03-31	52.4
2020-06-30	-9.3
2020-09-30	1.9
2020-12-31	2
2021-03-31	-10
2021-06-30	4.9
2021-09-30	12.8
2021-12-31	5.3
2022-03-31	4.9
2022-06-30	0.1
2022-09-30	13.4
2022-12-31	-19.2
2023-03-31	-0.2
2023-06-30	15.4
2023-09-30	5.8
2023-12-31	20.5