Quarter	Percent
1998-09-30	10.3
1998-12-31	14.4
1999-03-31	9.4
1999-06-30	6.9
1999-09-30	3.4
1999-12-31	7.5
2000-03-31	6.7
2000-06-30	4.5
2000-09-30	4
2000-12-31	0.3
2001-03-31	-0.4
2001-06-30	3.9
2001-09-30	7.2
2001-12-31	2.1
2002-03-31	4.2
2002-06-30	2.2
2002-09-30	1.2
2002-12-31	4.3
2003-03-31	2.6
2003-06-30	1.2
2003-09-30	-1.1
2003-12-31	0.7
2004-03-31	1.8
2004-06-30	3.6
2004-09-30	6.3
2004-12-31	5.3
2005-03-31	1.9
2005-06-30	0.5
2005-09-30	-4.6
2005-12-31	-6.6
2006-03-31	-4.7
2006-06-30	-2.4
2006-09-30	1.6
2006-12-31	1.5
2007-03-31	9.8
2007-06-30	12.3
2007-09-30	15.7
2007-12-31	16.4
2008-03-31	7.9
2008-06-30	7.2
2008-09-30	-3.5
2008-12-31	-9.7
2009-03-31	-11.4
2009-06-30	-13.9
2009-09-30	-8.9
2009-12-31	-6.9
2010-03-31	-3
2010-06-30	-13.9
2010-09-30	-14.5
2010-12-31	-10.3
2011-03-31	-15.3
2011-06-30	-5.5
2011-09-30	1
2011-12-31	-7.2
2012-03-31	-6.2
2012-06-30	-4.4
2012-09-30	-5.5
2012-12-31	-0.1
2013-03-31	4
2013-06-30	-6.2
2013-09-30	-8.9
2013-12-31	-5.3
2014-03-31	-8.3
2014-06-30	1.1
2014-09-30	4.5
2014-12-31	-2.9
2015-03-31	-0.1
2015-06-30	-5.9
2015-09-30	-6.9
2015-12-31	-1.1
2016-03-31	-1.9
2016-06-30	1.3
2016-09-30	0.7
2016-12-31	6
2017-03-31	4.2
2017-06-30	1.2
2017-09-30	-0.1
2017-12-31	-9.4
2018-03-31	-8.5
2018-06-30	-6.1
2018-09-30	-0.6
2018-12-31	-11.1
2019-03-31	-6.8
2019-06-30	-8.2
2019-09-30	-12.5
2019-12-31	2.8
2020-03-31	-0.9
2020-06-30	-5.3
2020-09-30	-4.7
2020-12-31	-0.5