Quarter	Percent
2008-12-31	11.4
2009-03-31	5.7
2009-06-30	5.9
2009-09-30	3.2
2009-12-31	-5.6
2010-03-31	-5.4
2010-06-30	-4.8
2010-09-30	-4.4
2010-12-31	1.8
2011-03-31	-0.5
2011-06-30	0.3
2011-09-30	-2
2011-12-31	-4.6
2012-03-31	-4.2
2012-06-30	-5.2
2012-09-30	-0.9
2012-12-31	1.1
2013-03-31	0.6
2013-06-30	-6.1
2013-09-30	-1.5
2013-12-31	-4.7
2014-03-31	-6
2014-06-30	-2.4
2014-09-30	-7
2014-12-31	-6.6
2015-03-31	-6.7
2015-06-30	-7.6
2015-09-30	-7.4
2015-12-31	-8.5
2016-03-31	-4.6
2016-06-30	-5.5
2016-09-30	-7.8
2016-12-31	-3.8
2017-03-31	-4.4
2017-06-30	-0.6
2017-09-30	3.8
2017-12-31	6
2018-03-31	1.1
2018-06-30	1.2
2018-09-30	0
2018-12-31	-0.3
2019-03-31	0.2
2019-06-30	-0.9
2019-09-30	0
2019-12-31	-1.6
2020-03-31	-6
2020-06-30	-19.7
2020-09-30	-24.7
2020-12-31	-28.6
2021-03-31	-16.9
2021-06-30	-4.4
2021-09-30	1.5
2021-12-31	9.4
2022-03-31	7.5
2022-06-30	8.4
2022-09-30	3
2022-12-31	-1
2023-03-31	-4
2023-06-30	-8.3
2023-09-30	-8.5
2023-12-31	-5.6