Quarter	Percent
1998-03-31	19.2
1998-06-30	1.9
1998-09-30	34.1
1998-12-31	-8.7
1999-03-31	-7.8
1999-06-30	8
1999-09-30	-27.4
1999-12-31	-21.1
2000-03-31	50.1
2000-06-30	14
2000-09-30	5.4
2000-12-31	-7.4
2001-03-31	3.9
2001-06-30	-21.2
2001-09-30	49.4
2001-12-31	-26
2002-03-31	-11.9
2002-06-30	15.8
2002-09-30	9.1
2002-12-31	3.8
2003-03-31	-2.3
2003-06-30	-6.2
2003-09-30	12
2003-12-31	-19
2004-03-31	4.3
2004-06-30	14.2
2004-09-30	16.5
2004-12-31	-14.7
2005-03-31	17
2005-06-30	25.2
2005-09-30	-8.1
2005-12-31	46.5
2006-03-31	-39.7
2006-06-30	-8.8
2006-09-30	23.8
2006-12-31	21.4
2007-03-31	-12.7
2007-06-30	29.8
2007-09-30	-2.6
2007-12-31	27.7
2008-03-31	11.3
2008-06-30	-41.9
2008-09-30	-3.6
2008-12-31	-21.6
2009-03-31	-24.7
2009-06-30	1.2
2009-09-30	-21.5
2009-12-31	3.3
2010-03-31	-0.7
2010-06-30	-15.4
2010-09-30	-15.6
2010-12-31	-3.6
2011-03-31	22.8
2011-06-30	-10.3
2011-09-30	-4.3
2011-12-31	-10.3
2012-03-31	49.6
2012-06-30	-5
2012-09-30	-15.4
2012-12-31	6.3
2013-03-31	11.9
2013-06-30	1.8
2013-09-30	-13.1
2013-12-31	-25.5
2014-03-31	12.9
2014-06-30	-7.4
2014-09-30	9
2014-12-31	-18.5
2015-03-31	44.8
2015-06-30	-21.1
2015-09-30	-24.7
2015-12-31	-5.1
2016-03-31	11.3
2016-06-30	20.5
2016-09-30	28.3
2016-12-31	-3.7
2017-03-31	22.3
2017-06-30	-16.9
2017-09-30	-5.1
2017-12-31	14.5
2018-03-31	16.9
2018-06-30	-2.1
2018-09-30	-7.9
2018-12-31	-3.5
2019-03-31	28.6
2019-06-30	22.5
2019-09-30	11.5
2019-12-31	-20.1
2020-03-31	129.7
2020-06-30	14.1
2020-09-30	-18.8
2020-12-31	13.4
2021-03-31	-25.5
2021-06-30	-8
2021-09-30	-13
2021-12-31	7.5
2022-03-31	6
2022-06-30	15.3
2022-09-30	77.1
2022-12-31	-48.3
2023-03-31	-33.9
2023-06-30	7.6
2023-09-30	13
2023-12-31	-7.9