Quarter	Percent
1998-12-31	8.2
1999-03-31	7.6
1999-06-30	10.3
1999-09-30	8.9
1999-12-31	6.7
2000-03-31	9.8
2000-06-30	10
2000-09-30	10.4
2000-12-31	14.8
2001-03-31	9.2
2001-06-30	6.4
2001-09-30	8.3
2001-12-31	4.1
2002-03-31	4.7
2002-06-30	4.5
2002-09-30	4.4
2002-12-31	7.5
2003-03-31	8.5
2003-06-30	9.7
2003-09-30	6.6
2003-12-31	2.8
2004-03-31	2.5
2004-06-30	1.5
2004-09-30	6.7
2004-12-31	8.9
2005-03-31	9.9
2005-06-30	16.1
2005-09-30	14.5
2005-12-31	15.9
2006-03-31	15.8
2006-06-30	12.2
2006-09-30	14.8
2006-12-31	14.1
2007-03-31	14.9
2007-06-30	14.7
2007-09-30	15.4
2007-12-31	18.4
2008-03-31	22
2008-06-30	18.6
2008-09-30	16.8
2008-12-31	11
2009-03-31	5.3
2009-06-30	2.2
2009-09-30	-5.7
2009-12-31	-7.7
2010-03-31	-9.2
2010-06-30	-8.3
2010-09-30	-6.1
2010-12-31	-5.4
2011-03-31	-4.5
2011-06-30	-4.4
2011-09-30	-3.2
2011-12-31	-2.5
2012-03-31	-4.1
2012-06-30	-3.7
2012-09-30	-4.2
2012-12-31	-5.2
2013-03-31	-3.3
2013-06-30	-3.9
2013-09-30	-3.4
2013-12-31	-2.9
2014-03-31	-3.4
2014-06-30	-2.4
2014-09-30	-1.9
2014-12-31	-1.8
2015-03-31	0.4
2015-06-30	-0.1
2015-09-30	-0.1
2015-12-31	0.6
2016-03-31	0.9
2016-06-30	3
2016-09-30	3.1
2016-12-31	3.5
2017-03-31	2.4
2017-06-30	2.8
2017-09-30	2.7
2017-12-31	2.5
2018-03-31	3.4
2018-06-30	1.4
2018-09-30	1.7
2018-12-31	2.9
2019-03-31	2.9
2019-06-30	4.8
2019-09-30	4.2
2019-12-31	3.7
2020-03-31	8.2
2020-06-30	9.2
2020-09-30	8.3
2020-12-31	7.5
2021-03-31	1.6
2021-06-30	-1.4
2021-09-30	-1.3
2021-12-31	-0.3
2022-03-31	1
2022-06-30	1.9
2022-09-30	4
2022-12-31	2.3
2023-03-31	0.5
2023-06-30	-1
2023-09-30	-1.4
2023-12-31	-1.2