Quarter	Percent
1999-03-31	4.5
1999-06-30	9.3
1999-09-30	7.3
1999-12-31	5.4
2000-03-31	8
2000-06-30	9.1
2000-09-30	10.3
2000-12-31	10.1
2001-03-31	9.5
2001-06-30	8.5
2001-09-30	10.1
2001-12-31	9.5
2002-03-31	7.7
2002-06-30	4.5
2002-09-30	4.2
2002-12-31	9.1
2003-03-31	7.4
2003-06-30	9.7
2003-09-30	5.7
2003-12-31	1.4
2004-03-31	-2.6
2004-06-30	-5.1
2004-09-30	2
2004-12-31	1.9
2005-03-31	9.2
2005-06-30	12.7
2005-09-30	9.7
2005-12-31	11.8
2006-03-31	13.6
2006-06-30	13.1
2006-09-30	15.8
2006-12-31	15.3
2007-03-31	11.4
2007-06-30	12.4
2007-09-30	14.8
2007-12-31	16.6
2008-03-31	18.1
2008-06-30	14.5
2008-09-30	7.4
2008-12-31	2.6
2009-03-31	0
2009-06-30	-5.3
2009-09-30	-8.6
2009-12-31	-9.6
2010-03-31	-12.1
2010-06-30	-9
2010-09-30	-8.3
2010-12-31	-8.2
2011-03-31	-6.3
2011-06-30	-8
2011-09-30	-4.8
2011-12-31	-3.6
2012-03-31	-4.5
2012-06-30	-4.3
2012-09-30	-4.9
2012-12-31	-7.3