Quarter	Percent
2000-12-31	32
2001-03-31	32.9
2001-06-30	30.4
2001-09-30	29.4
2001-12-31	36
2002-03-31	34.7
2002-06-30	36.9
2002-09-30	40.2
2002-12-31	38.4
2003-03-31	23.4
2003-06-30	22.3
2003-09-30	23.3
2003-12-31	25.1
2004-03-31	24
2004-06-30	28.1
2004-09-30	25.1
2004-12-31	28.3
2005-03-31	32.8
2005-06-30	41.6
2005-09-30	41.2
2005-12-31	53.2
2006-03-31	60.8
2006-06-30	54
2006-09-30	58.6
2006-12-31	67.4
2007-03-31	65.9
2007-06-30	71.6
2007-09-30	77.8
2007-12-31	77.2
2008-03-31	77.7
2008-06-30	65.7
2008-09-30	69.8
2008-12-31	73.1
2009-03-31	66.6
2009-06-30	65.2
2009-09-30	59.2
2009-12-31	54
2010-03-31	44.4
2010-06-30	0.6
2010-09-30	-1.4
2010-12-31	-4.9
2011-03-31	-3
2011-06-30	-1.4
2011-09-30	-2.8
2011-12-31	-7
2012-03-31	-10.7
2012-06-30	-11.6
2012-09-30	-9.2
2012-12-31	-2
2013-03-31	-0.4
2013-06-30	2
2013-09-30	0.1
2013-12-31	-4.3
2014-03-31	-5.1
2014-06-30	-8.7
2014-09-30	-9.7
2014-12-31	-9
2015-03-31	-7.2
2015-06-30	-5.8
2015-09-30	-5.7
2015-12-31	-3.5
2016-03-31	-1.5
2016-06-30	2.8
2016-09-30	6.7
2016-12-31	6.7
2017-03-31	7.6
2017-06-30	5.9
2017-09-30	5.7
2017-12-31	6
2018-03-31	2.4
2018-06-30	2.2
2018-09-30	1.5
2018-12-31	4.3
2019-03-31	1.1
2019-06-30	0.4
2019-09-30	0.4
2019-12-31	-0.9
2020-03-31	14.4
2020-06-30	14.3
2020-09-30	14.5
2020-12-31	14.7
2021-03-31	4
2021-06-30	4.7
2021-09-30	7.3
2021-12-31	6.7
2022-03-31	8.9
2022-06-30	6.2
2022-09-30	6.3
2022-12-31	1.5
2023-03-31	-2.7
2023-06-30	-1.1
2023-09-30	-4.4
2023-12-31	0.9