Month	Percent
1989-01-31	7.91
1989-02-28	8.36
1989-03-31	8.55
1989-04-30	8.4
1989-05-31	8.52
1989-06-30	8.74
1989-07-31	8.74
1989-08-31	8.86
1989-09-30	9.43
1989-10-31	10.01
1989-11-30	10.44
1989-12-31	10.68
1990-01-31	10.87
1990-02-28	10.84
1990-03-31	10.4
1990-04-30	9.91
1990-05-31	9.95
1990-06-30	9.77
1990-07-31	9.8
1990-08-31	9.84
1990-09-30	9.71
1990-10-31	9.47
1990-11-30	9.56
1990-12-31	9.84
1991-01-31	9.91
1991-02-28	9.43
1991-03-31	8.99
1991-04-30	8.99
1991-05-31	9.16
1991-06-30	9.59
1991-07-31	9.55
1991-08-31	9.48
1991-09-30	9.41
1991-10-31	9.48
1991-11-30	9.51
1991-12-31	10.14
1992-01-31	9.98
1992-02-29	9.84
1992-03-31	9.79
1992-04-30	9.75
1992-05-31	9.78
1992-06-30	10.11
1992-07-31	10.43
1992-08-31	10.75
1992-09-30	10.95
1992-10-31	10.94
1992-11-30	10.19
1992-12-31	10.73
1993-01-31	9.89
1993-02-28	9.36
1993-03-31	8.88
1993-04-30	8.64
1993-05-31	7.7
1993-06-30	7.3
1993-07-31	7.58
1993-08-31	7.71
1993-09-30	7.56
1993-10-31	7.26
1993-11-30	6.79
1993-12-31	6.29
1994-01-31	6.24
1994-02-28	6.26
1994-03-31	6.13
1994-04-30	5.99
1994-05-31	5.72
1994-06-30	5.8
1994-07-31	5.81
1994-08-31	5.82
1994-09-30	5.73
1994-10-31	5.76
1994-11-30	5.72
1994-12-31	5.9
1995-01-31	5.91
1995-02-28	5.89
1995-03-31	6.65
1995-04-30	6.17
1995-05-31	6.04
1995-06-30	5.99
1995-07-31	5.89
1995-08-31	5.62
1995-09-30	5.39
1995-10-31	5.61
1995-11-30	5.33
1995-12-31	5.16
1996-01-31	4.69
1996-02-29	4.41
1996-03-31	4.49
1996-04-30	4.33
1996-05-31	4.28
1996-06-30	4.3
1996-07-31	4.32
1996-08-31	4.27
1996-09-30	4.13
1996-10-31	4
1996-11-30	4.05
1996-12-31	3.95
1997-01-31	3.89
1997-02-28	3.89
1997-03-31	4.07
1997-04-30	4.02
1997-05-31	3.99
1997-06-30	4.03
1997-07-31	4.07
1997-08-31	4.23
1997-09-30	4.21
1997-10-31	4.32
1997-11-30	4.4
1997-12-31	4.27
1998-01-31	4.15
1998-02-28	4.14
1998-03-31	4
1998-04-30	3.97
1998-05-31	4.01
1998-06-30	4.02
1998-07-31	3.97
1998-08-31	3.97
1998-09-30	3.96
1998-10-31	3.77
1998-11-30	3.6
1998-12-31	3.12
1999-01-31	2.85
1999-02-28	2.83
1999-03-31	2.78
1999-04-30	2.42
1999-05-31	2.33
1999-06-30	2.39
1999-07-31	2.41
1999-08-31	2.53
1999-09-30	2.59
1999-10-31	2.93
1999-11-30	3.07
1999-12-31	3.19
2000-01-31	3.22
2000-02-29	3.41
2000-03-31	3.63
2000-04-30	3.8
2000-05-31	4.22
2000-06-30	4.37
2000-07-31	4.42
2000-08-31	4.61
2000-09-30	4.69
2000-10-31	4.84
2000-11-30	4.9
2000-12-31	4.8
2001-01-31	4.64
2001-02-28	4.62
2001-03-31	4.6
2001-04-30	4.59
2001-05-31	4.55
2001-06-30	4.37
2001-07-31	4.34
2001-08-31	4.23
2001-09-30	3.87
2001-10-31	3.49
2001-11-30	3.26
2001-12-31	3.21
2002-01-31	3.24
2002-02-28	3.27
2002-03-31	3.3
2002-04-30	3.32
2002-05-31	3.39
2002-06-30	3.38
2002-07-31	3.32
2002-08-31	3.25
2002-09-30	3.2
2002-10-31	3.08
2002-11-30	3
2002-12-31	2.67
2003-01-31	2.74
2003-02-28	2.59
2003-03-31	2.45
2003-04-30	2.44
2003-05-31	2.34
2003-06-30	2.07
2003-07-31	2.05
2003-08-31	2.05
2003-09-30	2.05
2003-10-31	2.03
2003-11-30	2.04
2003-12-31	2.04
2004-01-31	2
2004-02-29	1.99
2004-03-31	1.95
2004-04-30	1.98
2004-05-31	2.01
2004-06-30	2.03
2004-07-31	2.03
2004-08-31	2.03
2004-09-30	2.03
2004-10-31	2.05
2004-11-30	2.08
2004-12-31	2.08
2005-01-31	2.06
2005-02-28	2.05
2005-03-31	2.05
2005-04-30	2.06
2005-05-31	2.04
2005-06-30	2.03
2005-07-31	2.02
2005-08-31	2.03
2005-09-30	2.04
2005-10-31	2.08
2005-11-30	2.26
2005-12-31	2.34
2006-01-31	2.39
2006-02-28	2.47
2006-03-31	2.58
2006-04-30	2.64
2006-05-31	2.74
2006-06-30	2.84
2006-07-31	2.97
2006-08-31	3.07