Quarter	Percent
1998-12-31	23.1
1999-03-31	16.7
1999-06-30	14
1999-09-30	12
1999-12-31	6.1
2000-03-31	5.6
2000-06-30	8.8
2000-09-30	11.1
2000-12-31	7.6
2001-03-31	10.1
2001-06-30	12.7
2001-09-30	11.9
2001-12-31	13.8
2002-03-31	15.2
2002-06-30	12
2002-09-30	12.4
2002-12-31	15.6
2003-03-31	12.9
2003-06-30	8.5
2003-09-30	10.6
2003-12-31	11.9
2004-03-31	8.4
2004-06-30	12.8
2004-09-30	7.9
2004-12-31	8
2005-03-31	14.6
2005-06-30	16.6
2005-09-30	17.7
2005-12-31	16.5
2006-03-31	12.3
2006-06-30	12.4
2006-09-30	17.2
2006-12-31	17.5
2007-03-31	18.6
2007-06-30	12.1
2007-09-30	10.1
2007-12-31	9.7
2008-03-31	3.2
2008-06-30	1.6
2008-09-30	-3.8
2008-12-31	-10.1
2009-03-31	-4
2009-06-30	1.1
2009-09-30	0.5
2009-12-31	6.5
2010-03-31	3.3
2010-06-30	-2.4
2010-09-30	1.5
2010-12-31	-1
2011-03-31	-1.4
2011-06-30	1.9
2011-09-30	2.1
2011-12-31	4.2
2012-03-31	5
2012-06-30	6.8
2012-09-30	4.1
2012-12-31	1.8
2013-03-31	3.2
2013-06-30	1.1
2013-09-30	5.7
2013-12-31	10.3
2014-03-31	10.9
2014-06-30	12.7
2014-09-30	11.5
2014-12-31	10.1
2015-03-31	10.6
2015-06-30	11.2
2015-09-30	15
2015-12-31	12.3
2016-03-31	12.8
2016-06-30	12.7
2016-09-30	7.3
2016-12-31	8.6
2017-03-31	6.5
2017-06-30	8.7
2017-09-30	9.8
2017-12-31	11.8
2018-03-31	10.3
2018-06-30	7.9
2018-09-30	9.4
2018-12-31	7.5
2019-03-31	7.4
2019-06-30	2.7
2019-09-30	3.9
2019-12-31	0.7
2020-03-31	5.7
2020-06-30	14.1
2020-09-30	12.8
2020-12-31	17.5
2021-03-31	15.2
2021-06-30	11.9
2021-09-30	10.5
2021-12-31	8.4
2022-03-31	8.7
2022-06-30	8.8
2022-09-30	8.4
2022-12-31	3.7
2023-03-31	-2.9
2023-06-30	-6.6
2023-09-30	-7.8
2023-12-31	-5.8