Quarter	Percent
1998-03-31	23.4
1998-06-30	-12.7
1998-09-30	15.2
1998-12-31	-44.5
1999-03-31	41.4
1999-06-30	-6.6
1999-09-30	9.6
1999-12-31	-5.9
2000-03-31	82.6
2000-06-30	-7
2000-09-30	-5.4
2000-12-31	22.6
2001-03-31	46.7
2001-06-30	-19.8
2001-09-30	0.8
2001-12-31	27.7
2002-03-31	1.7
2002-06-30	26
2002-09-30	-7.7
2002-12-31	4.9
2003-03-31	6.3
2003-06-30	13.7
2003-09-30	23.5
2003-12-31	16.7
2004-03-31	33.2
2004-06-30	-2.3
2004-09-30	-2.1
2004-12-31	19.9
2005-03-31	2.4
2005-06-30	7.4
2005-09-30	-0.2
2005-12-31	9.9
2006-03-31	62.3
2006-06-30	6.4
2006-09-30	-0.2
2006-12-31	20.4
2007-03-31	76.6
2007-06-30	12.4
2007-09-30	11.8
2007-12-31	5.1
2008-03-31	24.7
2008-06-30	-9
2008-09-30	3.3
2008-12-31	13.1
2009-03-31	6
2009-06-30	-1.5
2009-09-30	-3.9
2009-12-31	3.7
2010-03-31	2.3
2010-06-30	-14.7
2010-09-30	20.2
2010-12-31	0.6
2011-03-31	3
2011-06-30	-5.7
2011-09-30	2.5
2011-12-31	-30.7
2012-03-31	16.9
2012-06-30	-11.8
2012-09-30	1.6
2012-12-31	9.1
2013-03-31	9.4
2013-06-30	-9
2013-09-30	-5.7
2013-12-31	-15.4
2014-03-31	-36.4
2014-06-30	-27.8
2014-09-30	-15.9
2014-12-31	-23.5
2015-03-31	18.4
2015-06-30	-11.7
2015-09-30	8.1
2015-12-31	-18.5
2016-03-31	-4
2016-06-30	-4.5
2016-09-30	-7
2016-12-31	-9.3
2017-03-31	8.7
2017-06-30	-3.1
2017-09-30	-5.3
2017-12-31	-3.4
2018-03-31	15.9
2018-06-30	18.4
2018-09-30	0.5
2018-12-31	-10.4
2019-03-31	14.1
2019-06-30	13.6
2019-09-30	2.3
2019-12-31	12.8
2020-03-31	36.5
2020-06-30	-2.7
2020-09-30	-7.7
2020-12-31	9.2
2021-03-31	-7.1
2021-06-30	15.5
2021-09-30	5.3
2021-12-31	-4.5
2022-03-31	11.3
2022-06-30	-9.2
2022-09-30	6.8
2022-12-31	-12
2023-03-31	1.5
2023-06-30	31.5
2023-09-30	7.3
2023-12-31	32.8