Quarter	Percent
1999-06-30	6.3
1999-09-30	6.2
1999-12-31	6.2
2000-03-31	6.5
2000-06-30	6.7
2000-09-30	6.6
2000-12-31	6.5
2001-03-31	6.3
2001-06-30	5.7
2001-09-30	5.3
2001-12-31	4.6
2002-03-31	4.2
2002-06-30	4.1
2002-09-30	4
2002-12-31	3.9
2003-03-31	3.8
2003-06-30	3.7
2003-09-30	3.5
2003-12-31	3.5
2004-03-31	3.8
2004-06-30	4
2004-09-30	4.4
2004-12-31	4.6
2005-03-31	4.6
2005-06-30	4.6
2005-09-30	4.5
2005-12-31	4.5
2006-03-31	4.5
2006-06-30	4.4
2006-09-30	4.4
2006-12-31	4.6
2007-03-31	4.9
2007-06-30	5
2007-09-30	5.3
2007-12-31	5.4