Quarter	Percent
1998-03-31	32.1
1998-06-30	11.4
1998-09-30	14.5
1998-12-31	36
1999-03-31	6.8
1999-06-30	1.3
1999-09-30	6.9
1999-12-31	9.5
2000-03-31	4.8
2000-06-30	14.4
2000-09-30	16
2000-12-31	-3.6
2001-03-31	14.8
2001-06-30	25.6
2001-09-30	12.8
2001-12-31	3.2
2002-03-31	20.5
2002-06-30	12.3
2002-09-30	14.5
2002-12-31	15.5
2003-03-31	9.6
2003-06-30	-4.1
2003-09-30	23.4
2003-12-31	20.8
2004-03-31	-3.5
2004-06-30	12.3
2004-09-30	3.4
2004-12-31	21.2
2005-03-31	22.3
2005-06-30	20.5
2005-09-30	7.4
2005-12-31	16.5
2006-03-31	5.5
2006-06-30	21.1
2006-09-30	26.9
2006-12-31	17.5
2007-03-31	9.5
2007-06-30	-3.2
2007-09-30	18
2007-12-31	15.9
2008-03-31	-14.4
2008-06-30	-9.1
2008-09-30	-5
2008-12-31	-11.7
2009-03-31	11.7
2009-06-30	11.5
2009-09-30	-7.1
2009-12-31	11
2010-03-31	-1.1
2010-06-30	-11.1
2010-09-30	8.5
2010-12-31	0.7
2011-03-31	-2.8
2011-06-30	1.7
2011-09-30	9.1
2011-12-31	9.6
2012-03-31	0.2
2012-06-30	8.8
2012-09-30	-1.6
2012-12-31	-0.1
2013-03-31	6.2
2013-06-30	0.1
2013-09-30	17.7
2013-12-31	18.3
2014-03-31	8.3
2014-06-30	7
2014-09-30	12.8
2014-12-31	12.4
2015-03-31	10.3
2015-06-30	9.5
2015-09-30	28.7
2015-12-31	2.3
2016-03-31	12.3
2016-06-30	9.3
2016-09-30	5.4
2016-12-31	7.5
2017-03-31	3.9
2017-06-30	18.7
2017-09-30	9.6
2017-12-31	15.4
2018-03-31	-1.5
2018-06-30	8.7
2018-09-30	16
2018-12-31	7.5
2019-03-31	-1.8
2019-06-30	-9.1
2019-09-30	21.6
2019-12-31	-5.2
2020-03-31	19.1
2020-06-30	23.5
2020-09-30	16.2
2020-12-31	11.3
2021-03-31	10.1
2021-06-30	9.9
2021-09-30	10.6
2021-12-31	3.3
2022-03-31	11.2
2022-06-30	10.4
2022-09-30	9.1
2022-12-31	-13.7
2023-03-31	-14.3
2023-06-30	-5.6
2023-09-30	3.6
2023-12-31	-6.1