Quarter	Percent
1998-03-31	15.6
1998-06-30	11.6
1998-09-30	18.9
1998-12-31	14.2
1999-03-31	24.1
1999-06-30	-3.8
1999-09-30	13.2
1999-12-31	27.9
2000-03-31	21.3
2000-06-30	13.1
2000-09-30	26.6
2000-12-31	33
2001-03-31	24.2
2001-06-30	12.5
2001-09-30	28.6
2001-12-31	26.4
2002-03-31	16.8
2002-06-30	13.2
2002-09-30	24
2002-12-31	25.9
2003-03-31	24.8
2003-06-30	18.5
2003-09-30	13.5
2003-12-31	10.8
2004-03-31	19.3
2004-06-30	23.3
2004-09-30	13.1
2004-12-31	10.4
2005-03-31	29.4
2005-06-30	22.8
2005-09-30	17.9
2005-12-31	15.3
2006-03-31	20.5
2006-06-30	20.2
2006-09-30	17.3
2006-12-31	15.2
2007-03-31	16.7
2007-06-30	25.2
2007-09-30	27
2007-12-31	17.7
2008-03-31	20.3
2008-06-30	13.9
2008-09-30	12.6
2008-12-31	4.6
2009-03-31	3.5
2009-06-30	-1.7
2009-09-30	-1.8
2009-12-31	-2.1
2010-03-31	-1.1
2010-06-30	-4.2
2010-09-30	-5.1
2010-12-31	-3.3
2011-03-31	2.2
2011-06-30	1.6
2011-09-30	-1
2011-12-31	-3.7
2012-03-31	-8.3
2012-06-30	-3.1
2012-09-30	-4.6
2012-12-31	-5.2
2013-03-31	-4.9
2013-06-30	-4.4
2013-09-30	-7.7
2013-12-31	-12.2
2014-03-31	-8.9
2014-06-30	-4.3
2014-09-30	-4.2
2014-12-31	-6.8
2015-03-31	-2.3
2015-06-30	-1.8
2015-09-30	2.1
2015-12-31	0.6
2016-03-31	5
2016-06-30	2.3
2016-09-30	0.8
2016-12-31	0
2017-03-31	-1.6
2017-06-30	-0.5
2017-09-30	-6.4
2017-12-31	0.7
2018-03-31	-0.6
2018-06-30	-0.9
2018-09-30	10.6
2018-12-31	4.2
2019-03-31	2.5
2019-06-30	8
2019-09-30	6.4
2019-12-31	2.4
2020-03-31	12.3
2020-06-30	4.8
2020-09-30	-1.9
2020-12-31	-3.4
2021-03-31	3.1
2021-06-30	-1.5
2021-09-30	-3.1
2021-12-31	4.1
2022-03-31	1.5
2022-06-30	7.3
2022-09-30	1.2
2022-12-31	6.8
2023-03-31	1.5
2023-06-30	6.3
2023-09-30	4.5
2023-12-31	8.3