Quarter	Percent
1998-03-31	108.5
1998-06-30	47.1
1998-09-30	48.6
1998-12-31	-65.9
1999-03-31	74.6
1999-06-30	-2.3
1999-09-30	13.9
1999-12-31	-41.7
2000-03-31	267.3
2000-06-30	63.2
2000-09-30	-48.5
2000-12-31	-33
2001-03-31	169.8
2001-06-30	-2.3
2001-09-30	-22.8
2001-12-31	-16
2002-03-31	35
2002-06-30	27.1
2002-09-30	-27.4
2002-12-31	-57.7
2003-03-31	62.2
2003-06-30	18.5
2003-09-30	3.9
2003-12-31	-36.2
2004-03-31	67.2
2004-06-30	6.2
2004-09-30	-62.3
2004-12-31	-26
2005-03-31	50.6
2005-06-30	37.2
2005-09-30	117.9
2005-12-31	-15.9
2006-03-31	111.4
2006-06-30	-14.6
2006-09-30	9.6
2006-12-31	25.9
2007-03-31	74.9
2007-06-30	37.2
2007-09-30	-11.4
2007-12-31	14.6
2008-03-31	46.2
2008-06-30	-18.9
2008-09-30	-41.5
2008-12-31	-58.7
2009-03-31	44.1
2009-06-30	-17.9
2009-09-30	-27.7
2009-12-31	2.7
2010-03-31	14.6
2010-06-30	3.8
2010-09-30	-12.9
2010-12-31	34.4
2011-03-31	30.3
2011-06-30	-31.2
2011-09-30	22.6
2011-12-31	-45.1
2012-03-31	123.2
2012-06-30	11
2012-09-30	67.2
2012-12-31	-46.1
2013-03-31	5.6
2013-06-30	38
2013-09-30	-51.1
2013-12-31	6.4
2014-03-31	85.6
2014-06-30	-7.6
2014-09-30	-42.9
2014-12-31	-18.3
2015-03-31	16.5
2015-06-30	-24.2
2015-09-30	4
2015-12-31	-32.1
2016-03-31	18.7
2016-06-30	-1.6
2016-09-30	19.3
2016-12-31	-19.2
2017-03-31	19.6
2017-06-30	24.3
2017-09-30	-19.5
2017-12-31	33.4
2018-03-31	11.9
2018-06-30	37.8
2018-09-30	-15.6
2018-12-31	-6.7
2019-03-31	-10.9
2019-06-30	8.4
2019-09-30	-12.1
2019-12-31	46.4
2020-03-31	182
2020-06-30	-35.9
2020-09-30	-14.4
2020-12-31	67.2
2021-03-31	3.5
2021-06-30	-6.1
2021-09-30	19.8
2021-12-31	22.7
2022-03-31	106.1
2022-06-30	-47.6
2022-09-30	51.7
2022-12-31	-57.8
2023-03-31	27.8
2023-06-30	6.8
2023-09-30	3.2
2023-12-31	70.1