Quarter	Percent
1998-03-31	39.2
1998-06-30	12.5
1998-09-30	25.9
1998-12-31	-43.6
1999-03-31	45.3
1999-06-30	-12.9
1999-09-30	6
1999-12-31	-32.1
2000-03-31	183.3
2000-06-30	18.7
2000-09-30	-5
2000-12-31	-17.5
2001-03-31	89.2
2001-06-30	12.9
2001-09-30	-5.1
2001-12-31	-4.4
2002-03-31	30.1
2002-06-30	13.4
2002-09-30	-13.6
2002-12-31	-34.8
2003-03-31	16.7
2003-06-30	37.5
2003-09-30	15.1
2003-12-31	-25.4
2004-03-31	45.2
2004-06-30	6
2004-09-30	-16.8
2004-12-31	16.4
2005-03-31	46.5
2005-06-30	28.2
2005-09-30	46.8
2005-12-31	16.3
2006-03-31	64.9
2006-06-30	16.7
2006-09-30	40.7
2006-12-31	33
2007-03-31	46.8
2007-06-30	31.8
2007-09-30	13.2
2007-12-31	-0.3
2008-03-31	56.1
2008-06-30	24.8
2008-09-30	-9.1
2008-12-31	62.9
2009-03-31	25.6
2009-06-30	1.3
2009-09-30	7.6
2009-12-31	32.7
2010-03-31	-8.8
2010-06-30	-9.4
2010-09-30	6.8
2010-12-31	0.5
2011-03-31	1.8
2011-06-30	-3.6
2011-09-30	-14.5
2011-12-31	-34.1
2012-03-31	-18.6
2012-06-30	-20
2012-09-30	-1.7
2012-12-31	5.1
2013-03-31	-11
2013-06-30	-2.3
2013-09-30	-9.6
2013-12-31	-19.9
2014-03-31	-16.9
2014-06-30	-29.1
2014-09-30	-16.7
2014-12-31	-18.3
2015-03-31	-17.8
2015-06-30	-11.6
2015-09-30	-13.8
2015-12-31	-4.6
2016-03-31	8.9
2016-06-30	-0.2
2016-09-30	18.8
2016-12-31	-12
2017-03-31	-10.4
2017-06-30	14.5
2017-09-30	-7.6
2017-12-31	-4
2018-03-31	6.2
2018-06-30	0.7
2018-09-30	-1.7
2018-12-31	-3.3
2019-03-31	-0.2
2019-06-30	2.7
2019-09-30	-11.4
2019-12-31	10.2
2020-03-31	72.6
2020-06-30	-15.7
2020-09-30	-15.9
2020-12-31	19.3
2021-03-31	2.7
2021-06-30	-1.8
2021-09-30	9.2
2021-12-31	-1.6
2022-03-31	37.9
2022-06-30	-29.8
2022-09-30	31
2022-12-31	-29.8
2023-03-31	8
2023-06-30	10.3
2023-09-30	0.8
2023-12-31	14.8