Monthly
1975-01-31 12
1975-02-28 10.91
1975-03-31 9.97
1975-04-30 9.97
1975-05-31 9.81
1975-06-30 9.75
1975-07-31 10.5
1975-08-31 10.47
1975-09-30 10.56
1975-10-31 11.45
1975-11-30 11.03
1975-12-31 10.63
1976-01-31 9.44
1976-02-29 8.69
1976-03-31 8.39
1976-04-30 9.88
1976-05-31 11.39
1976-06-30 11
1976-07-31 11
1976-08-31 11.02
1976-09-30 12.91
1976-10-31 14.78
1976-11-30 14.38
1976-12-31 13.63
1977-01-31 12
1977-02-28 10.84
1977-03-31 8.88
1977-04-30 7.55
1977-05-31 8
1977-06-30 7.64
1977-07-31 7.5
1977-08-31 6.53
1977-09-30 5.5
1977-10-31 4.77
1977-11-30 6.72
1977-12-31 6.34
1978-01-31 6.09
1978-02-28 6.58
1978-03-31 6.66
1978-04-30 8
1978-05-31 8.94
1978-06-30 9.88
1978-07-31 9.61
1978-08-31 9.25
1978-09-30 9.44
1978-10-31 10.86
1978-11-30 11.98
1978-12-31 12.22
1979-01-31 12.84
1979-02-28 11.94
1979-03-31 12
1979-04-30 11.33
1979-05-31 11.59
1979-06-30 13.92
1979-07-31 13.95
1979-08-31 13.94
1979-09-30 14.16
1979-10-31 14.22
1979-11-30 16.72
1979-12-31 16.75
1980-01-31 17.06
1980-02-29 17.59
1980-03-31 17.7
1980-04-30 16.5
1980-05-31 16.44
1980-06-30 16.27
1980-07-31 15.22
1980-08-31 15.98
1980-09-30 15.16
1980-10-31 15.81
1980-11-30 13.66
1980-12-31 14.25
1981-01-31 12.94
1981-02-28 11.94
1981-03-31 11.31
1981-04-30 11.56
1981-05-31 11.75
1981-06-30 11.97
1981-07-31 13.91
1981-08-31 13.25
1981-09-30 15.78
1981-10-31 15.78
1981-11-30 13.94
1981-12-31 14.84
1982-01-31 13.67
1982-02-28 13.41
1982-03-31 12.69
1982-04-30 13.06
1982-05-31 12.75
1982-06-30 12.34
1982-07-31 11.39
1982-08-31 10.19
1982-09-30 9.83
1982-10-31 9.06
1982-11-30 10.14
1982-12-31 9.94
1983-01-31 11.09
1983-02-28 10.89
1983-03-31 10.28
1983-04-30 9.84
1983-05-31 9.88
1983-06-30 9.38
1983-07-31 9.47
1983-08-31 9.41
1983-09-30 9.08
1983-10-31 8.91
1983-11-30 8.88
1983-12-31 8.86
1984-01-31 8.88
1984-02-29 8.88
1984-03-31 8.41
1984-04-30 8.41
1984-05-31 9.81
1984-06-30 9.06
1984-07-31 11.66
1984-08-31 10.05
1984-09-30 10.09
1984-10-31 9.94
1984-11-30 9.11
1984-12-31 9.14
1985-01-31 12
1985-02-28 13.44
1985-03-31 12.5
1985-04-30 12
1985-05-31 11.91
1985-06-30 12
1985-07-31 10.72
1985-08-31 11.06
1985-09-30 11.13
1985-10-31 11.17
1985-11-30 11.06
1985-12-31 11.23
1986-01-31 12.24
1986-02-28 11.96
1986-03-31 10.97
1986-04-30 10.01
1986-05-31 9.48
1986-06-30 9.4
1986-07-31 9.61
1986-08-31 9.44
1986-09-30 10.22
1986-10-31 10.68
1986-11-30 10.71
1986-12-31 10.68
1987-01-31 10.65
1987-02-28 10.34
1987-03-31 9.55
1987-04-30 8.99
1987-05-31 8.56
1987-06-30 8.87
1987-07-31 8.93
1987-08-31 10.06
1987-09-30 9.87
1987-10-31 8.97
1987-11-30 8.56
1987-12-31 8.39
1988-01-31 8.37
1988-02-29 8.89
1988-03-31 8.24
1988-04-30 7.97
1988-05-31 7.1
1988-06-30 9.56
1988-07-31 10.37
1988-08-31 11.71
1988-09-30 11.56
1988-10-31 11.61
1988-11-30 12.64
1988-12-31 12.64
1989-01-31 12.48
1989-02-28 12.85
1989-03-31 12.57
1989-04-30 12.49
1989-05-31 13.72
1989-06-30 13.61
1989-07-31 13.36
1989-08-31 13.44
1989-09-30 14.16
1989-10-31 14.64
1989-11-30 14.62
1989-12-31 13.35
1990-01-31 14.49
1990-02-28 14.52
1990-03-31 14.6
1990-04-30 14.71
1990-05-31 14.53
1990-06-30 14.35
1990-07-31 14.35
1990-08-31 14.32
1990-09-30 14.32
1990-10-31 13.2
1990-11-30 12.93
1990-12-31 13.35
1991-01-31 13.23
1991-02-28 11.94
1991-03-31 11.69
1991-04-30 11.22
1991-05-31 10.9
1991-06-30 10.77
1991-07-31 10.56
1991-08-31 10.29
1991-09-30 9.9
1991-10-31 10
1991-11-30 10.19
1991-12-31 10.28
1992-01-31 9.96
1992-02-29 9.83
1992-03-31 10.36
1992-04-30 9.99
1992-05-31 9.52
1992-06-30 9.58
1992-07-31 9.69
1992-08-31 9.97
1992-09-30 8.36
1992-10-31 6.82
1992-11-30 6.75
1992-12-31 6.58
1993-01-31 5.6
1993-02-28 5.68
1993-03-31 5.59
1993-04-30 5.74
1993-05-31 5.61
1993-06-30 5.61
1993-07-31 5.65
1993-08-31 5.58
1993-09-30 5.61
1993-10-31 5.43
1993-11-30 5.03
1993-12-31 5
1994-01-31 5.08
1994-02-28 4.91
1994-03-31 4.97
1994-04-30 4.9
1994-05-31 4.95
1994-06-30 4.97
1994-07-31 5.32
1994-08-31 5.41
1994-09-30 5.63
1994-10-31 5.85
1994-11-30 5.96
1994-12-31 6.3
1995-01-31 6.56
1995-02-28 6.55
1995-03-31 6.33
1995-04-30 6.72
1995-05-31 6.43
1995-06-30 6.68
1995-07-31 6.66
1995-08-31 6.58
1995-09-30 6.58
1995-10-31 6.55
1995-11-30 6.28
1995-12-31 6.28
1996-01-31 6.05
1996-02-29 5.94
1996-03-31 5.85
1996-04-30 5.85
1996-05-31 5.86
1996-06-30 5.58
1996-07-31 5.6
1996-08-31 5.6
1996-09-30 5.69
1996-10-31 5.97
1996-11-30 6.19
1996-12-31 6.22
1997-01-31 6.03
1997-02-28 5.96
1997-03-31 6.18
1997-04-30 6.35
1997-05-31 6.38
1997-06-30 6.66
1997-07-31 6.88
1997-08-31 7.03
1997-09-30 7.06
1997-10-31 7.08
1997-11-30 7.32
1997-12-31 7.31
1998-01-31 7.26
1998-02-28 7.27
1998-03-31 7.26
1998-04-30 7.21
1998-05-31 7.22
1998-06-30 7.55
1998-07-31 7.45
1998-08-31 7.38
1998-09-30 7.08
1998-10-31 6.76
1998-11-30 6.43
1998-12-31 5.88
1999-01-31 5.56
1999-02-28 5.19
1999-03-31 5.01
1999-04-30 5.02
1999-05-31 5.08
1999-06-30 4.88
1999-07-31 4.93
1999-08-31 4.92
1999-09-30 5.32
1999-10-31 5.47
1999-11-30 5.49
1999-12-31 5.69
2000-01-31 5.97
2000-02-29 6.02
2000-03-31 6.01
2000-04-30 6.1
2000-05-31 6.09
2000-06-30 5.98
2000-07-31 5.98
2000-08-31 5.99
2000-09-30 5.91
2000-10-31 5.91
2000-11-30 5.78
2000-12-31 5.79
2001-01-31 5.59
2001-02-28 5.49
2001-03-31 5.27
2001-04-30 5.14
2001-05-31 5.07
2001-06-30 5.13
2001-07-31 5.05
2001-08-31 4.75
2001-09-30 4.34
2001-10-31 4.05
2001-11-30 3.87
2001-12-31 3.92
2002-01-31 3.92
2002-02-28 3.92
2002-03-31 4.03
2002-04-30 4.01
2002-05-31 4.05
2002-06-30 4
2002-07-31 3.86
2002-08-31 3.87
2002-09-30 3.83
2002-10-31 3.81
2002-11-30 3.92
2002-12-31 3.9
2003-01-31 3.86
2003-02-28 3.58
2003-03-31 3.52
2003-04-30 3.49
2003-05-31 3.51
2003-06-30 3.53
2003-07-31 3.35
2003-08-31 3.51
2003-09-30 3.61
2003-10-31 3.85
2003-11-30 3.88
2003-12-31 3.93
2004-01-31 4.03
2004-02-29 4.09
2004-03-31 4.24
2004-04-30 4.34
2004-05-31 4.52
2004-06-30 4.74
2004-07-31 4.82
2004-08-31 4.82
2004-09-30 4.8
2004-10-31 4.79
2004-11-30 4.75
2004-12-31 4.76
2005-01-31 4.75
2005-02-28 4.86
2005-03-31 4.85
2005-04-30 4.83
2005-05-31 4.78
2005-06-30 4.69
2005-07-31 4.52