Month	Percent
1999-01-31	5.18
1999-02-28	4.87
1999-03-31	4.49
1999-04-30	4.25
1999-05-31	3.94
1999-06-30	3.78
1999-07-31	3.63
1999-08-31	3.68
1999-09-30	3.69
1999-10-31	3.72
1999-11-30	4.22
1999-12-31	4.24
2000-01-31	4.43
2000-02-29	4.77
2000-03-31	4.74
2000-04-30	4.89
2000-05-31	5.06
2000-06-30	5.19
2000-07-31	4.96
2000-08-31	5.09
2000-09-30	5.23
2000-10-31	5.03
2000-11-30	5.04
2000-12-31	5.05
2001-01-31	5.24
2001-02-28	4.85
2001-03-31	4.85
2001-04-30	4.31
2001-05-31	4.47
2001-06-30	4.24
2001-07-31	4.42
2001-08-31	4.02
2001-09-30	3.89
2001-10-31	3.77
2001-11-30	3.24
2001-12-31	3.33
2002-01-31	3.22
2002-02-28	3.18
2002-03-31	3.24
2002-04-30	3.26
2002-05-31	3.32
2002-06-30	3.25
2002-07-31	3.53
2002-08-31	3.64
2002-09-30	3.46
2002-10-31	3.59
2002-11-30	3.5
2002-12-31	3.53
2003-01-31	3.56
2003-02-28	3.39
2003-03-31	3.4
2003-04-30	3.29
2003-05-31	3.38
2003-06-30	3.11
2003-07-31	3.1
2003-08-31	2.92
2003-09-30	2.96
2003-10-31	3.01
2003-11-30	2.99
2003-12-31	3.16
2004-01-31	3.57
2004-02-29	3.77
2004-03-31	3.82
2004-04-30	3.87
2004-05-31	3.99
2004-06-30	4.1
2004-07-31	4.2
2004-08-31	4.39
2004-09-30	4.51
2004-10-31	4.48
2004-11-30	4.43
2004-12-31	4.53
2005-01-31	4.48
2005-02-28	4.5
2005-03-31	4.49
2005-04-30	4.45
2005-05-31	4.33
2005-06-30	4.45
2005-07-31	4.4
2005-08-31	4.17
2005-09-30	4.09
2005-10-31	3.98
2005-11-30	4.11
2005-12-31	4.12
2006-01-31	4.02
2006-02-28	4.17
2006-03-31	4.23
2006-04-30	4.12
2006-05-31	4.18
2006-06-30	4.27
2006-07-31	4.18
2006-08-31	4.55
2006-09-30	4.45
2006-10-31	4.44
2006-11-30	4.55
2006-12-31	4.78
2007-01-31	4.73
2007-02-28	5.2
2007-03-31	5.06
2007-04-30	5.02
2007-05-31	5.21
2007-06-30	5.24
2007-07-31	5.36
2007-08-31	5.48
2007-09-30	5.3
2007-10-31	5.48
2007-11-30	5.51
2007-12-31	5.23
2008-01-31	5.3
2008-02-29	4.99
2008-03-31	4.83
2008-04-30	4.82
2008-05-31	4.77
2008-06-30	4.82
2008-07-31	4.7
2008-08-31	4.83
2008-09-30	4.84
2008-10-31	4.48
2008-11-30	3.08
2008-12-31	1.97
2009-01-31	1.52
2009-02-28	1.02
2009-03-31	0.65
2009-04-30	0.47
2009-05-31	0.44
2009-06-30	0.45
2009-07-31	0.45
2009-08-31	0.45
2009-09-30	0.46
2009-10-31	0.5
2009-11-30	0.52
2009-12-31	0.52