Quarter	Percent
1997-03-31	6.7
1997-06-30	4.4
1997-09-30	3.7
1997-12-31	1.6
1998-03-31	7.5
1998-06-30	8
1998-09-30	3.8
1998-12-31	5.1
1999-03-31	7.5
1999-06-30	4.3
1999-09-30	1.1
1999-12-31	6.8
2000-03-31	17
2000-06-30	19.6
2000-09-30	17.3
2000-12-31	6.4
2001-03-31	6.6
2001-06-30	13.5
2001-09-30	7.5
2001-12-31	3.7
2002-03-31	3
2002-06-30	2.9
2002-09-30	4.4
2002-12-31	12
2003-03-31	12.7
2003-06-30	10.1
2003-09-30	5.7
2003-12-31	4.1
2004-03-31	7.7
2004-06-30	6.3
2004-09-30	10.3
2004-12-31	9.7
2005-03-31	12.2
2005-06-30	22.4
2005-09-30	20.5
2005-12-31	13.2
2006-03-31	14
2006-06-30	18.9
2006-09-30	22.1
2006-12-31	18.2
2007-03-31	14.8
2007-06-30	17.1
2007-09-30	18.6
2007-12-31	15.9
2008-03-31	10.5
2008-06-30	10.7
2008-09-30	6.4
2008-12-31	-2.9
2009-03-31	-1
2009-06-30	0
2009-09-30	-5.5
2009-12-31	-4.8
2010-03-31	-3
2010-06-30	-3.3
2010-09-30	-3.9
2010-12-31	-3.2
2011-03-31	-0.9
2011-06-30	0.2
2011-09-30	-2.8
2011-12-31	-5.7
2012-03-31	-2.7
2012-06-30	-1.6
2012-09-30	-3.6
2012-12-31	-3.7
2013-03-31	-1.4
2013-06-30	-2.6
2013-09-30	-2.8
2013-12-31	1.6
2014-03-31	-0.1
2014-06-30	-1.3
2014-09-30	-0.4
2014-12-31	-1.8
2015-03-31	0
2015-06-30	0.3
2015-09-30	0.6
2015-12-31	1.5
2016-03-31	3.9
2016-06-30	6.1
2016-09-30	3.9
2016-12-31	0.4
2017-03-31	2.6
2017-06-30	6.2
2017-09-30	3.1
2017-12-31	1.5
2018-03-31	2.3
2018-06-30	3.5
2018-09-30	3.8
2018-12-31	5.8
2019-03-31	6
2019-06-30	5.3
2019-09-30	5.8
2019-12-31	0.5
2020-03-31	10.7
2020-06-30	21.4
2020-09-30	6
2020-12-31	-1.2
2021-03-31	1.4
2021-06-30	1.9
2021-09-30	-2.1
2021-12-31	-2.8
2022-03-31	1.4
2022-06-30	1.6
2022-09-30	0.7
2022-12-31	-0.1
2023-03-31	-2.3
2023-06-30	-2.5
2023-09-30	-0.2
2023-12-31	0.9