Quarter	Percent
1998-03-31	34.8
1998-06-30	11.5
1998-09-30	13.6
1998-12-31	-22.3
1999-03-31	17.2
1999-06-30	0.7
1999-09-30	-2.6
1999-12-31	-13.5
2000-03-31	77.2
2000-06-30	37.7
2000-09-30	5.8
2000-12-31	-10.8
2001-03-31	38.7
2001-06-30	3.3
2001-09-30	9.9
2001-12-31	-5.2
2002-03-31	13
2002-06-30	7.2
2002-09-30	7.2
2002-12-31	-17.9
2003-03-31	11.9
2003-06-30	33
2003-09-30	9.4
2003-12-31	-5.7
2004-03-31	33.8
2004-06-30	18
2004-09-30	-0.3
2004-12-31	5
2005-03-31	29.7
2005-06-30	38.6
2005-09-30	6.1
2005-12-31	13.6
2006-03-31	35.9
2006-06-30	11.8
2006-09-30	23.2
2006-12-31	17
2007-03-31	29.2
2007-06-30	34.9
2007-09-30	15
2007-12-31	3.6
2008-03-31	31.2
2008-06-30	4.6
2008-09-30	17.1
2008-12-31	22.8
2009-03-31	16.4
2009-06-30	8.2
2009-09-30	6.4
2009-12-31	2.3
2010-03-31	0.2
2010-06-30	-6.1
2010-09-30	-1.8
2010-12-31	-11.5
2011-03-31	8.4
2011-06-30	0.2
2011-09-30	-7.1
2011-12-31	-25.8
2012-03-31	-7.7
2012-06-30	-3.7
2012-09-30	3.4
2012-12-31	0.5
2013-03-31	-1.5
2013-06-30	6
2013-09-30	-4.1
2013-12-31	-16.1
2014-03-31	-4.8
2014-06-30	-9.1
2014-09-30	-8.3
2014-12-31	-13.5
2015-03-31	2.9
2015-06-30	-3.4
2015-09-30	-8.3
2015-12-31	-4.8
2016-03-31	11.5
2016-06-30	14.5
2016-09-30	6.7
2016-12-31	-4.9
2017-03-31	15.5
2017-06-30	7.5
2017-09-30	5.9
2017-12-31	-3.9
2018-03-31	0.6
2018-06-30	6.6
2018-09-30	3
2018-12-31	7.3
2019-03-31	-11.2
2019-06-30	3.4
2019-09-30	3
2019-12-31	1.9
2020-03-31	58
2020-06-30	2.9
2020-09-30	3.6
2020-12-31	2.6
2021-03-31	6.8
2021-06-30	5.8
2021-09-30	14.4
2021-12-31	0.1
2022-03-31	16.1
2022-06-30	-4.4
2022-09-30	15.1
2022-12-31	-17
2023-03-31	-1.7
2023-06-30	2
2023-09-30	0.5
2023-12-31	3