Quarter	Percent
1998-06-30	7.1
1998-09-30	-2.6
1998-12-31	-8.2
1999-03-31	18.7
1999-06-30	22.3
1999-09-30	-8.1
1999-12-31	28.6
2000-03-31	7.3
2000-06-30	27.1
2000-09-30	20.2
2000-12-31	-6.8
2001-03-31	6
2001-06-30	27.9
2001-09-30	-5.3
2001-12-31	-0.1
2002-03-31	0.2
2002-06-30	13
2002-09-30	13.1
2002-12-31	3.4
2003-03-31	4.8
2003-06-30	15.7
2003-09-30	4.3
2003-12-31	11.3
2004-03-31	11.3
2004-06-30	22.9
2004-09-30	-0.3
2004-12-31	-4.7
2005-03-31	14.1
2005-06-30	17.4
2005-09-30	-6.8
2005-12-31	11.4
2006-03-31	26.5
2006-06-30	17.4
2006-09-30	2.5
2006-12-31	3.7
2007-03-31	17.3
2007-06-30	22.6
2007-09-30	-3.5
2007-12-31	-5.6
2008-03-31	-0.9
2008-06-30	0.2
2008-09-30	-13.3
2008-12-31	-12.4
2009-03-31	12.2
2009-06-30	7.2
2009-09-30	-2.5
2009-12-31	9.9
2010-03-31	5.3
2010-06-30	3.9
2010-09-30	3.4
2010-12-31	-1.3
2011-03-31	2.9
2011-06-30	8.2
2011-09-30	-8.7
2011-12-31	0
2012-03-31	6.2
2012-06-30	6
2012-09-30	3.8
2012-12-31	3