Quarter	Percent
1987-09-30	21.6
1987-12-31	23.1
1988-03-31	6.9
1988-06-30	3.3
1988-09-30	20.3
1988-12-31	16.3
1989-03-31	-2.4
1989-06-30	-1.3
1989-09-30	17.6
1989-12-31	15.9
1990-03-31	5.7
1990-06-30	7.6
1990-09-30	19.7
1990-12-31	21
1991-03-31	-0.9
1991-06-30	-3.2
1991-09-30	11.7
1991-12-31	11.9
1992-03-31	-1.4
1992-06-30	-2.9
1992-09-30	7.4
1992-12-31	6
1993-03-31	-4.3
1993-06-30	-1.4
1993-09-30	12.6
1993-12-31	18.3
1994-03-31	1.9
1994-06-30	2.8
1994-09-30	23.8
1994-12-31	26.9
1995-03-31	10.7
1995-06-30	7.8
1995-09-30	23
1995-12-31	28.5
1996-03-31	13.1
1996-06-30	10
1996-09-30	28.8
1996-12-31	36.1
1997-03-31	17.8
1997-06-30	9.1
1997-09-30	25.5
1997-12-31	36.9
1998-03-31	22.2
1998-06-30	15.1
1998-09-30	31.3
1998-12-31	37.4
1999-03-31	20.2
1999-06-30	11.4
1999-09-30	23.3
1999-12-31	30
2000-03-31	18.4
2000-06-30	14.4
2000-09-30	25.4
2000-12-31	27.2
2001-03-31	12.8
2001-06-30	9.6
2001-09-30	20.8
2001-12-31	24.5
2002-03-31	16.3
2002-06-30	11.5
2002-09-30	23.5
2002-12-31	25.5
2003-03-31	14.5
2003-06-30	17
2003-09-30	28.4
2003-12-31	24.6
2004-03-31	15.1
2004-06-30	16.2
2004-09-30	26.4
2004-12-31	25.7
2005-03-31	14.7
2005-06-30	9.8
2005-09-30	13.7
2005-12-31	12.9
2006-03-31	3.9
2006-06-30	1.3
2006-09-30	5.2
2006-12-31	5.9
2007-03-31	0.1
2007-06-30	-2.6
2007-09-30	5.9
2007-12-31	11.5
2008-03-31	5.1
2008-06-30	3.7
2008-09-30	12.2
2008-12-31	12.2
2009-03-31	3.3
2009-06-30	1.1
2009-09-30	5.7
2009-12-31	8.5
2010-03-31	2.5
2010-06-30	-1.5
2010-09-30	4.8
2010-12-31	8.1
2011-03-31	0.4
2011-06-30	-1.1
2011-09-30	6.1
2011-12-31	5.7
2012-03-31	-2
2012-06-30	-2.7
2012-09-30	4.3
2012-12-31	7.1
2013-03-31	1.3
2013-06-30	0.2
2013-09-30	7.2
2013-12-31	9.2
2014-03-31	2
2014-06-30	-0.1
2014-09-30	7.3
2014-12-31	10.3
2015-03-31	2.8
2015-06-30	0.8
2015-09-30	8.9
2015-12-31	11.9
2016-03-31	6.3
2016-06-30	3.9
2016-09-30	10.6
2016-12-31	13.8
2017-03-31	6.6
2017-06-30	4.6
2017-09-30	11.8
2017-12-31	12.9
2018-03-31	6.6
2018-06-30	6.2
2018-09-30	10.4
2018-12-31	7.9
2019-03-31	2
2019-06-30	2.1
2019-09-30	7.1
2019-12-31	7.1
2020-03-31	-6.9
2020-06-30	-26.3
2020-09-30	-16.4
2020-12-31	-5.2
2021-03-31	-19.2
2021-06-30	-7.5
2021-09-30	13.6
2021-12-31	12.6
2022-03-31	7.5
2022-06-30	12.3
2022-09-30	17
2022-12-31	12.4
2023-03-31	8.5
2023-06-30	11.7
2023-09-30	16.6
2023-12-31	13.5