Month	Percent
1989-01-31	7.94
1989-02-28	8.65
1989-03-31	8.47
1989-04-30	8.22
1989-05-31	8.61
1989-06-30	8.86
1989-07-31	8.68
1989-08-31	9.09
1989-09-30	9.8
1989-10-31	10.4
1989-11-30	10.53
1989-12-31	10.89
1990-01-31	10.77
1990-02-28	10.67
1990-03-31	9.63
1990-04-30	10.1
1990-05-31	9.85
1990-06-30	9.75
1990-07-31	9.77
1990-08-31	9.78
1990-09-30	9.72
1990-10-31	9.47
1990-11-30	9.74
1990-12-31	9.84
1991-01-31	9.7
1991-02-28	9.18
1991-03-31	8.93
1991-04-30	9.19
1991-05-31	9.28
1991-06-30	9.57
1991-07-31	9.64
1991-08-31	9.44
1991-09-30	9.42
1991-10-31	9.47
1991-11-30	9.78
1991-12-31	10.26
1992-01-31	10.16
1992-02-29	9.59
1992-03-31	9.82
1992-04-30	9.84
1992-05-31	9.81
1992-06-30	10.18
1992-07-31	10.67
1992-08-31	11.09
1992-09-30	11.13
1992-10-31	10.13
1992-11-30	11.16
1992-12-31	10.13
1993-01-31	9.68
1993-02-28	9.43
1993-03-31	8.75
1993-04-30	8.2
1993-05-31	7.39
1993-06-30	7.07
1993-07-31	7.85
1993-08-31	7.68
1993-09-30	7.44
1993-10-31	7
1993-11-30	6.64
1993-12-31	6.16
1994-01-31	6.3
1994-02-28	6.16
1994-03-31	6.14
1994-04-30	5.76
1994-05-31	5.99
1994-06-30	5.71
1994-07-31	5.85
1994-08-31	5.7
1994-09-30	5.63
1994-10-31	5.74
1994-11-30	5.74
1994-12-31	6.07
1995-01-31	5.87
1995-02-28	6
1995-03-31	6.67
1995-04-30	6.15
1995-05-31	6.02
1995-06-30	6.06
1995-07-31	5.82
1995-08-31	5.44
1995-09-30	5.48
1995-10-31	5.59
1995-11-30	5.25
1995-12-31	4.99
1996-01-31	4.49
1996-02-29	4.46
1996-03-31	4.45
1996-04-30	4.16
1996-05-31	4.38
1996-06-30	4.32
1996-07-31	4.32
1996-08-31	4.2
1996-09-30	4.03
1996-10-31	4.01
1996-11-30	4.04
1996-12-31	3.95
1997-01-31	3.88
1997-02-28	3.98
1997-03-31	4.08
1997-04-30	3.99
1997-05-31	4.05
1997-06-30	4.03
1997-07-31	4.16
1997-08-31	4.22
1997-09-30	4.17
1997-10-31	4.37
1997-11-30	4.33
1997-12-31	4.2
1998-01-31	4.17
1998-02-28	4.11
1998-03-31	3.97
1998-04-30	4.01
1998-05-31	4.02
1998-06-30	4.02
1998-07-31	3.97
1998-08-31	3.97
1998-09-30	3.93
1998-10-31	3.72
1998-11-30	3.58
1998-12-31	2.96
1999-01-31	2.81
1999-02-28	2.83
1999-03-31	2.75
1999-04-30	2.34
1999-05-31	2.36
1999-06-30	2.42
1999-07-31	2.41
1999-08-31	2.53
1999-09-30	2.56
1999-10-31	2.99
1999-11-30	3.12
1999-12-31	3.15
2000-01-31	3.31
2000-02-29	3.5
2000-03-31	3.67
2000-04-30	3.89
2000-05-31	4.22
2000-06-30	4.37
2000-07-31	4.44
2000-08-31	4.66
2000-09-30	4.71
2000-10-31	4.9
2000-11-30	4.88
2000-12-31	4.73
2001-01-31	4.6
2001-02-28	4.66
2001-03-31	4.49
2001-04-30	4.73
2001-05-31	4.47
2001-06-30	4.33
2001-07-31	4.32
2001-08-31	4.16
2001-09-30	3.54
2001-10-31	3.4
2001-11-30	3.27
2001-12-31	3.2
2002-01-31	3.28
2002-02-28	3.27
2002-03-31	3.32
2002-04-30	3.3
2002-05-31	3.37
2002-06-30	3.34
2002-07-31	3.25
2002-08-31	3.27
2002-09-30	3.18
2002-10-31	3.12
2002-11-30	2.95
2002-12-31	2.77
2003-01-31	2.71
2003-02-28	2.45
2003-03-31	2.44
2003-04-30	2.45
2003-05-31	2.2
2003-06-30	2.08
2003-07-31	2.04
2003-08-31	2.07
2003-09-30	2.02
2003-10-31	2.04
2003-11-30	2.06
2003-12-31	2.04
2004-01-31	1.99
2004-02-29	1.98
2004-03-31	1.91
2004-04-30	1.99
2004-05-31	2.01
2004-06-30	2.02
2004-07-31	2.03
2004-08-31	2.03
2004-09-30	2.03
2004-10-31	2.06
2004-11-30	2.08
2004-12-31	2.06
2005-01-31	2.06
2005-02-28	2.06
2005-03-31	2.05
2005-04-30	2.05
2005-05-31	2.02
2005-06-30	2.03
2005-07-31	2.02
2005-08-31	2.04
2005-09-30	2.04
2005-10-31	2.16
2005-11-30	2.33
2005-12-31	2.35
2006-01-31	2.43
2006-02-28	2.54
2006-03-31	2.66
2006-04-30	2.69
2006-05-31	2.8
2006-06-30	2.89
2006-07-31	3.04