Quarter	Percent
1999-03-31	4.6
1999-06-30	-4
1999-09-30	-5.9
1999-12-31	-4.2
2000-03-31	0.8
2000-06-30	46.4
2000-09-30	57.9
2000-12-31	52.6
2001-03-31	37.1
2001-06-30	-8.5
2001-09-30	-16
2001-12-31	-14.6
2002-03-31	-13.8
2002-06-30	-3.1
2002-09-30	-5.7
2002-12-31	-8.8
2003-03-31	-0.5
2003-06-30	-0.4
2003-09-30	6.5
2003-12-31	12.3
2004-03-31	15.7
2004-06-30	10.1
2004-09-30	8.4
2004-12-31	10.5
2005-03-31	2.6
2005-06-30	15.3
2005-09-30	14.8
2005-12-31	10
2006-03-31	18
2006-06-30	15.8
2006-09-30	21.9
2006-12-31	16
2007-03-31	19.7
2007-06-30	21.7
2007-09-30	14.6
2007-12-31	11
2008-03-31	0.9
2008-06-30	-7.5
2008-09-30	17.4
2008-12-31	26.4
2009-03-31	14.3
2009-06-30	20.9
2009-09-30	-2.2
2009-12-31	2
2010-03-31	8
2010-06-30	3.7
2010-09-30	3.4
2010-12-31	5.6
2011-03-31	0.8
2011-06-30	10.9
2011-09-30	9.5
2011-12-31	-1
2012-03-31	2.7
2012-06-30	6.8
2012-09-30	-0.8
2012-12-31	10.8