Quarter	Percent, Seasonally adjusted
1997-12-31	45.7
1998-03-31	41.7
1998-06-30	15.6
1998-09-30	-17
1998-12-31	-8.9
1999-03-31	28.6
1999-06-30	-18.1
1999-09-30	-10.3
1999-12-31	33.6
2000-03-31	79.5
2000-06-30	11.6
2000-09-30	33.5
2000-12-31	-47.1
2001-03-31	-1.6
2001-06-30	9.5
2001-09-30	-63.4
2001-12-31	140.4
2002-03-31	-18.1
2002-06-30	-73.1
2002-09-30	-57.5
2002-12-31	16.2
2003-03-31	-14.4
2003-06-30	52.5
2003-09-30	28.5
2003-12-31	179.7
2004-03-31	-3.4
2004-06-30	-36.4
2004-09-30	13.9
2004-12-31	-6.8
2005-03-31	36.6
2005-06-30	42.5
2005-09-30	96
2005-12-31	158
2006-03-31	27
2006-06-30	56
2006-09-30	28.2
2006-12-31	99.2
2007-03-31	104.1
2007-06-30	-2.5
2007-09-30	-9.8
2007-12-31	13.3
2008-03-31	-72.3
2008-06-30	46.9
2008-09-30	-61.4
2008-12-31	-86.4
2009-03-31	1.1
2009-06-30	61
2009-09-30	20
2009-12-31	64.4
2010-03-31	39.3
2010-06-30	-14.9
2010-09-30	39.6
2010-12-31	2.2
2011-03-31	32.4
2011-06-30	76.2
2011-09-30	-70.3
2011-12-31	-53
2012-03-31	145.4
2012-06-30	-29.4
2012-09-30	-13.6
2012-12-31	14.3
2013-03-31	64.1
2013-06-30	-28
2013-09-30	14.4
2013-12-31	58
2014-03-31	38.3
2014-06-30	14
2014-09-30	-6
2014-12-31	2.5
2015-03-31	3.8
2015-06-30	13
2015-09-30	-4.8
2015-12-31	-7.6
2016-03-31	18.8
2016-06-30	3.1
2016-09-30	-2.9
2016-12-31	-29.4
2017-03-31	54.2
2017-06-30	10
2017-09-30	-8.6
2017-12-31	5.8
2018-03-31	-0.2
2018-06-30	-6.8
2018-09-30	7.9
2018-12-31	-11.4
2019-03-31	-7.1
2019-06-30	-3.2
2019-09-30	15.2
2019-12-31	-29.3
2020-03-31	-13.3
2020-06-30	101.3
2020-09-30	36.2
2020-12-31	12
2021-03-31	8.4
2021-06-30	-2.6
2021-09-30	5.8
2021-12-31	-3.7
2022-03-31	-7.6
2022-06-30	-3.4
2022-09-30	14
2022-12-31	-44
2023-03-31	-31.6
2023-06-30	-26.6
2023-09-30	3.6
2023-12-31	-15.1