Quarter	Percent
1998-12-31	12.2
1999-03-31	9.4
1999-06-30	7.7
1999-09-30	10.8
1999-12-31	12.5
2000-03-31	14
2000-06-30	16.4
2000-09-30	16.8
2000-12-31	13.4
2001-03-31	9.4
2001-06-30	11.1
2001-09-30	9.5
2001-12-31	6.5
2002-03-31	10.5
2002-06-30	7.3
2002-09-30	8
2002-12-31	11.9
2003-03-31	11.5
2003-06-30	9.2
2003-09-30	9.4
2003-12-31	10.9
2004-03-31	7.5
2004-06-30	11.8
2004-09-30	11.6
2004-12-31	8.8
2005-03-31	11.2
2005-06-30	14.5
2005-09-30	13
2005-12-31	16.8
2006-03-31	17.7
2006-06-30	15.2
2006-09-30	18.7
2006-12-31	17.9
2007-03-31	15.1
2007-06-30	12.5
2007-09-30	10.9
2007-12-31	8.3
2008-03-31	4
2008-06-30	0.8
2008-09-30	-4.3
2008-12-31	-5.3
2009-03-31	-0.4
2009-06-30	2
2009-09-30	3
2009-12-31	7.6
2010-03-31	3.4
2010-06-30	1
2010-09-30	5.6
2010-12-31	3.2
2011-03-31	3.1
2011-06-30	4.8
2011-09-30	0.5
2011-12-31	0.3
2012-03-31	0.7
2012-06-30	0.6
2012-09-30	5
2012-12-31	3.8
2013-03-31	3.9
2013-06-30	9.8
2013-09-30	0.4
2013-12-31	5.2
2014-03-31	6.3
2014-06-30	3
2014-09-30	10.4
2014-12-31	6.6
2015-03-31	9.3
2015-06-30	7.8
2015-09-30	11
2015-12-31	11.6
2016-03-31	13
2016-06-30	9.1
2016-09-30	6.3
2016-12-31	7.6
2017-03-31	2.7
2017-06-30	9.4
2017-09-30	9.8
2017-12-31	10.2
2018-03-31	8.2
2018-06-30	7.3
2018-09-30	7.2
2018-12-31	6.1
2019-03-31	5.4
2019-06-30	1.1
2019-09-30	1.1
2019-12-31	2
2020-03-31	5.2
2020-06-30	12.7
2020-09-30	17.3
2020-12-31	19.2
2021-03-31	20.2
2021-06-30	15.2
2021-09-30	9.2
2021-12-31	7.8
2022-03-31	8.8
2022-06-30	5.6
2022-09-30	6.2
2022-12-31	1.4
2023-03-31	-5.7
2023-06-30	-7.5
2023-09-30	-8.5
2023-12-31	-6.1