Month	Percent
1999-03-31	44.5
1999-04-30	44.1
1999-05-31	44
1999-06-30	44.5
1999-07-31	43.9
1999-08-31	43.8
1999-09-30	43.7
1999-10-31	42.6
1999-11-30	42.6
1999-12-31	43.5
2000-01-31	41.6
2000-02-29	41.1
2000-03-31	41.8
2000-04-30	41.8
2000-05-31	41.4
2000-06-30	42.2
2000-07-31	41.8
2000-08-31	42.3
2000-09-30	40.9
2000-10-31	40.6
2000-11-30	41.2
2000-12-31	41
2001-01-31	39.7
2001-02-28	39
2001-03-31	38.9
2001-04-30	38.4
2001-05-31	38.5
2001-06-30	38.8
2001-07-31	38.2
2001-08-31	38.1
2001-09-30	37.8
2001-10-31	37.6
2001-11-30	37.3
2001-12-31	37.8
2002-01-31	37.3
2002-02-28	36.7
2002-03-31	36.7
2002-04-30	36.5
2002-05-31	36.9
2002-06-30	37.1
2002-07-31	36.6
2002-08-31	36.1
2002-09-30	36.7
2002-10-31	36.6
2002-11-30	36.6
2002-12-31	37.2
2003-01-31	36.5
2003-02-28	36.2
2003-03-31	36.6
2003-04-30	36.5
2003-05-31	36.8
2003-06-30	37.3
2003-07-31	37.4
2003-08-31	37.1
2003-09-30	37.6
2003-10-31	38
2003-11-30	38.5
2003-12-31	38.5
2004-01-31	38.1
2004-02-29	38
2004-03-31	38.4
2004-04-30	38.2
2004-05-31	38.6
2004-06-30	38.9
2004-07-31	38.5
2004-08-31	38.3
2004-09-30	38.8
2004-10-31	38.7
2004-11-30	39.1
2004-12-31	40.1
2005-01-31	39.3
2005-02-28	39.3