Quarter	Percent
1998-09-30	26.2
1998-12-31	11
1999-03-31	5.3
1999-06-30	7.1
1999-09-30	2.9
1999-12-31	2.8
2000-03-31	6
2000-06-30	2
2000-09-30	1.8
2000-12-31	4.3
2001-03-31	1.1
2001-06-30	3.5
2001-09-30	3.9
2001-12-31	5.9
2002-03-31	6.6
2002-06-30	4.8
2002-09-30	3.4
2002-12-31	4.3
2003-03-31	4.4
2003-06-30	2.3
2003-09-30	4.6
2003-12-31	-0.1
2004-03-31	2.3
2004-06-30	4.7
2004-09-30	5
2004-12-31	6
2005-03-31	8.1
2005-06-30	8.8
2005-09-30	12.3
2005-12-31	11.4
2006-03-31	14
2006-06-30	14
2006-09-30	10.8
2006-12-31	14.2
2007-03-31	15.6
2007-06-30	16.9
2007-09-30	18.6
2007-12-31	15.4
2008-03-31	6.1
2008-06-30	3.6
2008-09-30	0.9
2008-12-31	-2.6
2009-03-31	-4.6
2009-06-30	-11.9
2009-09-30	-16.8
2009-12-31	-15.1
2010-03-31	-13.3
2010-06-30	-5.4
2010-09-30	-2.1
2010-12-31	0.2
2011-03-31	-0.9
2011-06-30	-30.1
2011-09-30	-1.3
2011-12-31	-3.1
2012-03-31	-0.8
2012-06-30	0.2
2012-09-30	-1.9
2012-12-31	-4
2013-03-31	-5.9
2013-06-30	-6.6
2013-09-30	-7
2013-12-31	-5.8
2014-03-31	-4
2014-06-30	-3.8
2014-09-30	-1.4
2014-12-31	1.5
2015-03-31	4.3
2015-06-30	5.5
2015-09-30	1.5
2015-12-31	2.7
2016-03-31	-0.9
2016-06-30	0.1
2016-09-30	3
2016-12-31	-5.4
2017-03-31	-4.2
2017-06-30	-4.7
2017-09-30	-6.8
2017-12-31	0.3
2018-03-31	-2.8
2018-06-30	-3.7
2018-09-30	-0.5
2018-12-31	-5.5
2019-03-31	1.9
2019-06-30	3.6
2019-09-30	2.3
2019-12-31	11.7
2020-03-31	6.8
2020-06-30	3.5
2020-09-30	4.3
2020-12-31	-0.2