Quarter	Percent
1987-06-30	34.5
1987-09-30	34.1
1987-12-31	26.3
1988-03-31	28.1
1988-06-30	28.2
1988-09-30	36.8
1988-12-31	15
1989-03-31	25.7
1989-06-30	27.2
1989-09-30	24.4
1989-12-31	12
1990-03-31	9.5
1990-06-30	13
1990-09-30	10.5
1990-12-31	1.9
1991-03-31	8.5
1991-06-30	5.2
1991-09-30	5.1
1991-12-31	-0.7
1992-03-31	0.9
1992-06-30	-2.6
1992-09-30	6.7
1992-12-31	-0.8
1993-03-31	2.5
1993-06-30	2.9
1993-09-30	10.6
1993-12-31	3.5
1994-03-31	8.3
1994-06-30	9
1994-09-30	14.5
1994-12-31	8.8
1995-03-31	13.1
1995-06-30	8.1
1995-09-30	17.5
1995-12-31	12.2
1996-03-31	12.4
1996-06-30	12.4
1996-09-30	24.6
1996-12-31	12
1997-03-31	14.5
1997-06-30	16.1
1997-09-30	11.9
1997-12-31	13.4
1998-03-31	18.6
1998-06-30	12.2
1998-09-30	16.4
1998-12-31	9.1
1999-03-31	15.2
1999-06-30	11.4
1999-09-30	14.4
1999-12-31	8.7
2000-03-31	14.5
2000-06-30	7.5
2000-09-30	8
2000-12-31	6.9
2001-03-31	11.9
2001-06-30	12.3
2001-09-30	14
2001-12-31	13.3
2002-03-31	15.4
2002-06-30	11.9
2002-09-30	17.6
2002-12-31	11.4
2003-03-31	12
2003-06-30	10.4
2003-09-30	11.8
2003-12-31	7.5
2004-03-31	14.2
2004-06-30	11.2
2004-09-30	11.7
2004-12-31	7.5
2005-03-31	13.3
2005-06-30	9.6
2005-09-30	8.4
2005-12-31	4
2006-03-31	7.9
2006-06-30	5.9
2006-09-30	7.5
2006-12-31	4.9
2007-03-31	4.3
2007-06-30	5.7
2007-09-30	8.2
2007-12-31	4.3
2008-03-31	5.5
2008-06-30	3.3
2008-09-30	1.2
2008-12-31	-1.2
2009-03-31	-0.5
2009-06-30	-2.6
2009-09-30	-6.1
2009-12-31	-4.5
2010-03-31	-4.1
2010-06-30	-4.2
2010-09-30	-4.5
2010-12-31	-0.8
2011-03-31	-3.3
2011-06-30	-2.4
2011-09-30	-1.5
2011-12-31	-3
2012-03-31	-0.9
2012-06-30	-0.4
2012-09-30	2.7
2012-12-31	2.7
2013-03-31	3.8
2013-06-30	2.7
2013-09-30	10.8
2013-12-31	3.4
2014-03-31	8.3
2014-06-30	4.2
2014-09-30	12.4
2014-12-31	4.9
2015-03-31	11.5
2015-06-30	7.3
2015-09-30	13.9
2015-12-31	7.5
2016-03-31	15.1
2016-06-30	9.7
2016-09-30	13.4
2016-12-31	7.6
2017-03-31	13.6
2017-06-30	8.9
2017-09-30	13.6
2017-12-31	7.8
2018-03-31	8.5
2018-06-30	9.9
2018-09-30	9.3
2018-12-31	4.2
2019-03-31	7.6
2019-06-30	6.5
2019-09-30	9.4
2019-12-31	4.2
2020-03-31	3.1
2020-06-30	-14.6
2020-09-30	3.3
2020-12-31	-4.1
2021-03-31	-1.9
2021-06-30	2.3
2021-09-30	2.9
2021-12-31	1.9
2022-03-31	5.1
2022-06-30	7
2022-09-30	6.1
2022-12-31	2.1
2023-03-31	6.5
2023-06-30	7.7
2023-09-30	7.6
2023-12-31	5.3