Quarter	Percent
1998-12-31	1.9
1999-03-31	7.5
1999-06-30	7.4
1999-09-30	12.6
1999-12-31	13.5
2000-03-31	6.5
2000-06-30	12.7
2000-09-30	7.9
2000-12-31	5.6
2001-03-31	8.4
2001-06-30	7.5
2001-09-30	11.7
2001-12-31	11.9
2002-03-31	14.9
2002-06-30	14.5
2002-09-30	12.5
2002-12-31	12.4
2003-03-31	7.2
2003-06-30	5.4
2003-09-30	6.5
2003-12-31	5.5
2004-03-31	11.1
2004-06-30	12.9
2004-09-30	12.7
2004-12-31	13.7
2005-03-31	8.7
2005-06-30	9.4
2005-09-30	10.7
2005-12-31	11.9
2006-03-31	16.7
2006-06-30	13.5
2006-09-30	13.9
2006-12-31	17
2007-03-31	13.6
2007-06-30	22.8
2007-09-30	14.2
2007-12-31	8.7
2008-03-31	6.6
2008-06-30	-12.7
2008-09-30	-7.2
2008-12-31	-9.2
2009-03-31	-10.3
2009-06-30	0.5
2009-09-30	-2.5
2009-12-31	2
2010-03-31	0.6
2010-06-30	2.7
2010-09-30	0.2
2010-12-31	-4
2011-03-31	-3.3
2011-06-30	-10.1
2011-09-30	-4.4
2011-12-31	-2.3
2012-03-31	-0.6
2012-06-30	4.4
2012-09-30	-0.2
2012-12-31	4.9
2013-03-31	8.8
2013-06-30	11.4
2013-09-30	14.7
2013-12-31	12.4
2014-03-31	11.1
2014-06-30	16
2014-09-30	11.1
2014-12-31	11.6
2015-03-31	13.2
2015-06-30	7.8
2015-09-30	10.9
2015-12-31	11.7
2016-03-31	9.7
2016-06-30	13.5
2016-09-30	15
2016-12-31	14
2017-03-31	15
2017-06-30	14.4
2017-09-30	14.8
2017-12-31	12.8
2018-03-31	10.2
2018-06-30	8.4
2018-09-30	5.1
2018-12-31	3.8
2019-03-31	1.9
2019-06-30	-1.6
2019-09-30	2
2019-12-31	4.1
2020-03-31	12.6
2020-06-30	25.7
2020-09-30	24.6
2020-12-31	26.9
2021-03-31	21.2
2021-06-30	13.6
2021-09-30	9.9
2021-12-31	1.5
2022-03-31	-1.9
2022-06-30	-5.6
2022-09-30	-3.8
2022-12-31	-2.1
2023-03-31	-1.9
2023-06-30	-2.1
2023-09-30	-2.7
2023-12-31	-0.8