Month	Percent
1984-01-31	10.84
1984-02-29	10.81
1984-03-31	10.65
1984-04-30	11.01
1984-05-31	11.69
1984-06-30	11.7
1984-07-31	12.24
1984-08-31	11.3
1984-09-30	11.03
1984-10-31	10.97
1984-11-30	10.75
1984-12-31	11.07
1985-01-31	11.44
1985-02-28	11.43
1985-03-31	11.09
1985-04-30	11.08
1985-05-31	11.11
1985-06-30	11.05
1985-07-31	10.67
1985-08-31	10.66
1985-09-30	10.55
1985-10-31	10.57
1985-11-30	10.62
1985-12-31	10.83
1986-01-31	11.12
1986-02-28	10.27
1986-03-31	9.14
1986-04-30	8.89
1986-05-31	9.33
1986-06-30	9.55
1986-07-31	9.7
1986-08-31	9.59
1986-09-30	10.86
1986-10-31	10.92
1986-11-30	11.1
1986-12-31	10.57
1987-01-31	10.24
1987-02-28	9.68
1987-03-31	9.18
1987-04-30	8.88
1987-05-31	8.71
1987-06-30	9.2
1987-07-31	9.86
1987-08-31	10.37
1987-09-30	10.26
1987-10-31	9.46
1987-11-30	9.31
1987-12-31	9.61
1988-01-31	9.37
1988-02-29	9.26
1988-03-31	9.09
1988-04-30	9.37
1988-05-31	9.45
1988-06-30	9.8
1988-07-31	9.79
1988-08-31	10.22
1988-09-30	9.88
1988-10-31	9.61
1988-11-30	10.16
1988-12-31	10.11
1989-01-31	9.73
1989-02-28	9.96
1989-03-31	10
1989-04-30	10.09
1989-05-31	10.45
1989-06-30	10.41
1989-07-31	9.88
1989-08-31	10.02
1989-09-30	10.46
1989-10-31	10.43
1989-11-30	10.71
1989-12-31	10.41
1990-01-31	11.11
1990-02-28	11.63
1990-03-31	12.52
1990-04-30	13.18
1990-05-31	12.18
1990-06-30	11.65
1990-07-31	11.77
1990-08-31	12.01
1990-09-30	12.14
1990-10-31	11.5
1990-11-30	10.92
1990-12-31	11.04
1991-01-31	10.26
1991-02-28	10.22
1991-03-31	10.14
1991-04-30	10.3
1991-05-31	10.48
1991-06-30	10.56
1991-07-31	10.18
1991-08-31	9.96
1991-09-30	9.58
1991-10-31	9.69
1991-11-30	9.87
1991-12-31	9.73
1992-01-31	9.39
1992-02-29	9.26
1992-03-31	9.9
1992-04-30	9.16
1992-05-31	8.89
1992-06-30	9.11
1992-07-31	9.3
1992-08-31	9.68
1992-09-30	8.96
1992-10-31	8.08
1992-11-30	8.55
1992-12-31	8.17
1993-01-31	8.06
1993-02-28	7.79
1993-03-31	7.8
1993-04-30	8.18
1993-05-31	8.21
1993-06-30	7.7
1993-07-31	7.42
1993-08-31	6.82
1993-09-30	6.96
1993-10-31	6.92
1993-11-30	6.66
1993-12-31	6.07
1994-01-31	6.24
1994-02-28	6.99
1994-03-31	7.64
1994-04-30	8.05
1994-05-31	8.78
1994-06-30	8.91
1994-07-31	8.74
1994-08-31	8.7
1994-09-30	8.98
1994-10-31	8.89
1994-11-30	8.57
1994-12-31	8.85
1995-01-31	8.69
1995-02-28	8.76
1995-03-31	8.61
1995-04-30	8.55
1995-05-31	7.99
1995-06-30	8.54
1995-07-31	8.27
1995-08-31	8.12
1995-09-30	8.17
1995-10-31	7.98
1995-11-30	7.59
1995-12-31	7.45
1996-01-31	7.52
1996-02-29	8.03
1996-03-31	8.19
1996-04-30	8.06
1996-05-31	8.16
1996-06-30	7.91
1996-07-31	7.93
1996-08-31	7.93
1996-09-30	7.69
1996-10-31	7.68
1996-11-30	7.37
1996-12-31	7.53
1997-01-31	7.43
1997-02-28	7.28
1997-03-31	7.68
1997-04-30	7.47
1997-05-31	7.23
1997-06-30	7.12
1997-07-31	6.99
1997-08-31	7.12
1997-09-30	6.47
1997-10-31	6.57
1997-11-30	6.5
1997-12-31	6.31
1998-01-31	6.06
1998-02-28	6.09
1998-03-31	5.89
1998-04-30	5.81
1998-05-31	5.68
1998-06-30	5.77
1998-07-31	5.69
1998-08-31	5.32
1998-09-30	4.88
1998-10-31	5.06
1998-11-30	4.67
1998-12-31	4.38
1999-01-31	4.19
1999-02-28	4.64
1999-03-31	4.59
1999-04-30	4.72
1999-05-31	4.99
1999-06-30	5.19
1999-07-31	5.46
1999-08-31	5.28
1999-09-30	5.74
1999-10-31	5.51
1999-11-30	5.32
1999-12-31	5.56
2000-01-31	5.69
2000-02-29	5.52
2000-03-31	5.32
2000-04-30	5.27
2000-05-31	5.21
2000-06-30	5.22
2000-07-31	5.26
2000-08-31	5.36
2000-09-30	5.24
2000-10-31	5.19
2000-11-30	4.89
2000-12-31	4.88
2001-01-31	4.8
2001-02-28	4.83
2001-03-31	4.82
2001-04-30	5.15
2001-05-31	5.26
2001-06-30	5.34
2001-07-31	5.07
2001-08-31	4.92
2001-09-30	4.96
2001-10-31	4.58
2001-11-30	4.71
2001-12-31	5.09
2002-01-31	4.92
2002-02-28	5.02
2002-03-31	5.35
2002-04-30	5.25
2002-05-31	5.31
2002-06-30	5.06
2002-07-31	4.92
2002-08-31	4.66
2002-09-30	4.41
2002-10-31	4.6
2002-11-30	4.71
2002-12-31	4.42
2003-01-31	4.31
2003-02-28	4.23
2003-03-31	4.34
2003-04-30	4.41
2003-05-31	4.14
2003-06-30	4.25
2003-07-31	4.57
2003-08-31	4.67
2003-09-30	4.58
2003-10-31	5.03
2003-11-30	5.07
2003-12-31	4.8
2004-01-31	4.89
2004-02-29	4.8
2004-03-31	4.75
2004-04-30	4.99
2004-05-31	5.15
2004-06-30	5.11
2004-07-31	5.09
2004-08-31	4.91
2004-09-30	4.84
2004-10-31	4.75
2004-11-30	4.61
2004-12-31	4.38
2005-01-31	4.6
2005-02-28	4.72
2005-03-31	4.69
2005-04-30	4.52
2005-05-31	4.32
2005-06-30	4.18
2005-07-31	4.31
2005-08-31	4.29
2005-09-30	4.28
2005-10-31	4.33
2005-11-30	4.22
2005-12-31	3.94
2006-01-31	4
2006-02-28	3.97
2006-03-31	4.39
2006-04-30	4.49
2006-05-31	4.59
2006-06-30	4.71
2006-07-31	4.6
2006-08-31	4.51
2006-09-30	4.52
2006-10-31	4.51
2006-11-30	4.51
2006-12-31	4.55
2007-01-31	4.96
2007-02-28	4.77
2007-03-31	4.95
2007-04-30	5.02