Quarter	Percent
2000-09-30	19.5
2000-12-31	16.3
2001-03-31	16.8
2001-06-30	19
2001-09-30	17.2
2001-12-31	10.6
2002-03-31	12.4
2002-06-30	9.7
2002-09-30	8.7
2002-12-31	13.9
2003-03-31	7.4
2003-06-30	12.4
2003-09-30	9.4
2003-12-31	8.1
2004-03-31	9.7
2004-06-30	6.6
2004-09-30	13.9
2004-12-31	15.6
2005-03-31	19.1
2005-06-30	25.6
2005-09-30	28.4
2005-12-31	24.2
2006-03-31	26.7
2006-06-30	25.2
2006-09-30	25.8
2006-12-31	26.8
2007-03-31	25.6
2007-06-30	28.7
2007-09-30	35.9
2007-12-31	39.4
2008-03-31	40.6
2008-06-30	34
2008-09-30	32
2008-12-31	29.2
2009-03-31	25
2009-06-30	13.8
2009-09-30	10.7
2009-12-31	8.1
2010-03-31	4.7
2010-06-30	-6.7
2010-09-30	-5.3
2010-12-31	-6.2
2011-03-31	-5.1
2011-06-30	-6.6
2011-09-30	-4.1
2011-12-31	-3.8
2012-03-31	-2.7
2012-06-30	-2.9
2012-09-30	-4
2012-12-31	-4.7
2013-03-31	-6.4
2013-06-30	-5.3
2013-09-30	-5.2
2013-12-31	-2.9
2014-03-31	-1.4
2014-06-30	-0.5
2014-09-30	-0.3
2014-12-31	0.9
2015-03-31	1.4
2015-06-30	2.6
2015-09-30	3.8
2015-12-31	4.9
2016-03-31	6.6
2016-06-30	8.4
2016-09-30	6.5
2016-12-31	5.7
2017-03-31	4.1
2017-06-30	3.1
2017-09-30	4.6
2017-12-31	4.4
2018-03-31	5.2
2018-06-30	2.2
2018-09-30	0.9
2018-12-31	1.6
2019-03-31	1.5
2019-06-30	2.3
2019-09-30	2.8
2019-12-31	0.7
2020-03-31	6.3
2020-06-30	13.8
2020-09-30	11.3
2020-12-31	15.1
2021-03-31	7.3
2021-06-30	-1.7
2021-09-30	0.7
2021-12-31	2.1
2022-03-31	2.3
2022-06-30	1.4
2022-09-30	2.5
2022-12-31	-3.9
2023-03-31	-5.6
2023-06-30	-4
2023-09-30	-5.7
2023-12-31	-6.3