Quarter	Percent
1998-12-31	0.6
1999-03-31	6.8
1999-06-30	8.6
1999-09-30	4.6
1999-12-31	11.7
2000-03-31	37.9
2000-06-30	22.9
2000-09-30	38.6
2000-12-31	64.4
2001-03-31	41
2001-06-30	8.8
2001-09-30	-2.3
2001-12-31	-34.4
2002-03-31	-41.3
2002-06-30	-20.6
2002-09-30	-26
2002-12-31	-3.2
2003-03-31	-12.2
2003-06-30	-11.9
2003-09-30	-13.3
2003-12-31	-26.8
2004-03-31	-15.5
2004-06-30	-25
2004-09-30	-26.4
2004-12-31	-11.7
2005-03-31	-19.8
2005-06-30	53.7
2005-09-30	72.1
2005-12-31	14.9
2006-03-31	35.8
2006-06-30	-20.6
2006-09-30	-10.1
2006-12-31	92
2007-03-31	71.5
2007-06-30	55.4
2007-09-30	24
2007-12-31	-20.5
2008-03-31	-1.9
2008-06-30	20.5
2008-09-30	49.1
2008-12-31	46.9
2009-03-31	23.9
2009-06-30	6.6
2009-09-30	-14.7
2009-12-31	-15.1
2010-03-31	-23.4
2010-06-30	-30
2010-09-30	-23.2
2010-12-31	-21.3
2011-03-31	-20.4
2011-06-30	-13.8
2011-09-30	-11.3
2011-12-31	-9.1
2012-03-31	-2.3
2012-06-30	4.8
2012-09-30	8.9
2012-12-31	16.3
2013-03-31	16
2013-06-30	3.9
2013-09-30	16.3
2013-12-31	22.9
2014-03-31	28.9
2014-06-30	36.1
2014-09-30	17.4
2014-12-31	5.7
2015-03-31	9.1
2015-06-30	5.3
2015-09-30	2.7
2015-12-31	3.8
2016-03-31	6.8
2016-06-30	9.3
2016-09-30	17.8
2016-12-31	9.2
2017-03-31	8.5
2017-06-30	12.7
2017-09-30	5.6
2017-12-31	12.6
2018-03-31	6.1
2018-06-30	6.6
2018-09-30	13.3
2018-12-31	13.8
2019-03-31	14.5
2019-06-30	16.8
2019-09-30	15.2
2019-12-31	18.9
2020-03-31	21.2
2020-06-30	9.4
2020-09-30	11.8
2020-12-31	2.3
2021-03-31	1.5
2021-06-30	34.2
2021-09-30	35.3
2021-12-31	34.4
2022-03-31	25.3
2022-06-30	-7.2
2022-09-30	-2
2022-12-31	3.1
2023-03-31	6.2
2023-06-30	13.5
2023-09-30	10.6
2023-12-31	6.4