,Instrument,"State & local bonds"
  ,Maturity,"20-year"
  ,Frequency,"Monthly"
  ,Description,"BOND BUYER GO 20-BOND MUNICIPAL BOND INDEX"
  ,Note,"Bond Buyer Index, general obligation, 20 years to maturity, mixed quality; Thursday quotations."


DATE      , SLY20
01/1953, 2.44
02/1953, 2.59
03/1953, 2.65
04/1953, 2.67
05/1953, 2.82
06/1953, 3.03
07/1953, 2.95
08/1953, 2.90
09/1953, 2.87
10/1953, 2.71
11/1953, 2.60
12/1953, 2.59
01/1954, 2.50
02/1954, 2.42
03/1954, 2.39
04/1954, 2.47
05/1954, 2.49
06/1954, 2.47
07/1954, 2.32
08/1954, 2.26
09/1954, 2.31
10/1954, 2.34
11/1954, 2.32
12/1954, 2.36
01/1955, 2.40
02/1955, 2.43
03/1955, 2.44
04/1955, 2.41
05/1955, 2.38
06/1955, 2.41
07/1955, 2.54
08/1955, 2.60
09/1955, 2.58
10/1955, 2.51
11/1955, 2.45
12/1955, 2.57
01/1956, 2.50
02/1956, 2.44
03/1956, 2.57
04/1956, 2.70
05/1956, 2.68
06/1956, 2.54
07/1956, 2.65
08/1956, 2.80
09/1956, 2.93
10/1956, 2.95
11/1956, 3.16
12/1956, 3.22
01/1957, 3.18
02/1957, 3.00
03/1957, 3.09
04/1957, 3.13
05/1957, 3.27
06/1957, 3.41
07/1957, 3.39
08/1957, 3.54
09/1957, 3.53
10/1957, 3.42
11/1957, 3.37
12/1957, 3.04
01/1958, 2.91
02/1958, 3.02
03/1958, 3.06
04/1958, 2.96
05/1958, 2.92
06/1958, 2.97
07/1958, 3.09
08/1958, 3.35
09/1958, 3.54
10/1958, 3.45
11/1958, 3.32
12/1958, 3.33
01/1959, 3.42
02/1959, 3.36
03/1959, 3.30
04/1959, 3.39
05/1959, 3.57
06/1959, 3.71
07/1959, 3.71
08/1959, 3.58
09/1959, 3.78
10/1959, 3.62
11/1959, 3.55
12/1959, 3.70
01/1960, 3.72
02/1960, 3.60
03/1960, 3.57
04/1960, 3.56
05/1960, 3.60
06/1960, 3.55
07/1960, 3.50
08/1960, 3.33
09/1960, 3.42
10/1960, 3.53
11/1960, 3.40
12/1960, 3.40
01/1961, 3.39
02/1961, 3.31
03/1961, 3.45
04/1961, 3.48
05/1961, 3.43
06/1961, 3.52
07/1961, 3.51
08/1961, 3.52
09/1961, 3.53
10/1961, 3.42
11/1961, 3.41
12/1961, 3.47
01/1962, 3.34
02/1962, 3.21
03/1962, 3.14
04/1962, 3.06
05/1962, 3.11
06/1962, 3.25
07/1962, 3.27
08/1962, 3.23
09/1962, 3.11
10/1962, 3.02
11/1962, 3.04
12/1962, 3.07
01/1963, 3.10
02/1963, 3.15
03/1963, 3.05
04/1963, 3.10
05/1963, 3.11
06/1963, 3.21
07/1963, 3.22
08/1963, 3.13
09/1963, 3.20
10/1963, 3.20
11/1963, 3.30
12/1963, 3.27
01/1964, 3.22
02/1964, 3.14
03/1964, 3.28
04/1964, 3.28
05/1964, 3.20
06/1964, 3.20
07/1964, 3.18
08/1964, 3.19
09/1964, 3.23
10/1964, 3.25
11/1964, 3.18
12/1964, 3.13
01/1965, 3.06
02/1965, 3.09
03/1965, 3.17
04/1965, 3.15
05/1965, 3.17
06/1965, 3.24
07/1965, 3.27
08/1965, 3.24
09/1965, 3.35
10/1965, 3.40
11/1965, 3.45
12/1965, 3.54
01/1966, 3.52
02/1966, 3.64
03/1966, 3.72
04/1966, 3.56
05/1966, 3.65
06/1966, 3.77
07/1966, 3.95
08/1966, 4.12
09/1966, 4.12
10/1966, 3.93
11/1966, 3.86
12/1966, 3.86
01/1967, 3.54
02/1967, 3.52
03/1967, 3.55
04/1967, 3.60
05/1967, 3.89
06/1967, 3.96
07/1967, 4.02
08/1967, 3.99
09/1967, 4.12
10/1967, 4.29
11/1967, 4.34
12/1967, 4.43
01/1968, 4.29
02/1968, 4.31
03/1968, 4.54
04/1968, 4.34
05/1968, 4.54
06/1968, 4.49
07/1968, 4.33
08/1968, 4.21
09/1968, 4.38
10/1968, 4.49
11/1968, 4.60
12/1968, 4.82
01/1969, 4.85
02/1969, 4.98
03/1969, 5.26
04/1969, 5.19
05/1969, 5.33
06/1969, 5.75
07/1969, 5.75
08/1969, 6.00
09/1969, 6.26
10/1969, 6.09
11/1969, 6.30
12/1969, 6.82
01/1970, 6.63
02/1970, 6.22
03/1970, 6.05
04/1970, 6.65
05/1970, 7.00
06/1970, 6.93
07/1970, 6.42
08/1970, 6.17
09/1970, 6.31
10/1970, 6.37
11/1970, 5.71
12/1970, 5.47
01/1971, 5.35
02/1971, 5.23
03/1971, 5.17
04/1971, 5.37
05/1971, 5.90
06/1971, 5.95
07/1971, 6.06
08/1971, 5.82
09/1971, 5.37
10/1971, 5.06
11/1971, 5.20
12/1971, 5.21
01/1972, 5.12
02/1972, 5.28
03/1972, 5.31
04/1972, 5.43
05/1972, 5.30
06/1972, 5.33
07/1972, 5.41
08/1972, 5.30
09/1972, 5.36
10/1972, 5.18
11/1972, 5.02
12/1972, 5.05
01/1973, 5.05
02/1973, 5.13
03/1973, 5.29
04/1973, 5.15
05/1973, 5.15
06/1973, 5.17
07/1973, 5.40
08/1973, 5.48
09/1973, 5.10
10/1973, 5.05
11/1973, 5.18
12/1973, 5.12
01/1974, 5.22
02/1974, 5.20
03/1974, 5.40
04/1974, 5.73
05/1974, 6.02
06/1974, 6.13
07/1974, 6.68
08/1974, 6.71
09/1974, 6.76
10/1974, 6.57
11/1974, 6.61
12/1974, 7.05
01/1975, 6.82
02/1975, 6.39
03/1975, 6.73
04/1975, 6.95
05/1975, 6.97
06/1975, 6.94
07/1975, 7.07
08/1975, 7.17
09/1975, 7.44
10/1975, 7.39
11/1975, 7.43
12/1975, 7.31
01/1976, 7.07
02/1976, 6.94
03/1976, 6.91
04/1976, 6.60
05/1976, 6.87
06/1976, 6.87
07/1976, 6.79
08/1976, 6.61
09/1976, 6.51
10/1976, 6.30
11/1976, 6.29
12/1976, 5.94
01/1977, 5.87
02/1977, 5.88
03/1977, 5.89
04/1977, 5.72
05/1977, 5.75
06/1977, 5.62
07/1977, 5.63
08/1977, 5.62
09/1977, 5.51
10/1977, 5.64
11/1977, 5.49
12/1977, 5.57
01/1978, 5.71
02/1978, 5.62
03/1978, 5.61
04/1978, 5.79
05/1978, 6.03
06/1978, 6.22
07/1978, 6.28
08/1978, 6.12
09/1978, 6.09
10/1978, 6.13
11/1978, 6.19
12/1978, 6.50
01/1979, 6.46
02/1979, 6.31
03/1979, 6.33
04/1979, 6.28
05/1979, 6.25
06/1979, 6.12
07/1979, 6.13
08/1979, 6.20
09/1979, 6.52
10/1979, 7.08
11/1979, 7.30
12/1979, 7.22
01/1980, 7.35
02/1980, 8.16
03/1980, 9.16
04/1980, 8.63
05/1980, 7.59
06/1980, 7.63
07/1980, 8.13
08/1980, 8.67
09/1980, 8.94
10/1980, 9.11
11/1980, 9.56
12/1980, 10.20
01/1981, 9.66
02/1981, 10.09
03/1981, 10.16
04/1981, 10.62
05/1981, 10.77
06/1981, 10.67
07/1981, 11.14
08/1981, 12.26
09/1981, 12.92
10/1981, 12.83
11/1981, 11.89
12/1981, 12.91
01/1982, 13.28
02/1982, 12.97
03/1982, 12.82
04/1982, 12.58
05/1982, 11.95
06/1982, 12.44
07/1982, 12.28
08/1982, 11.23
09/1982, 10.66
10/1982, 9.68
11/1982, 10.06
12/1982, 9.96
01/1983, 9.50
02/1983, 9.58
03/1983, 9.20
04/1983, 9.04
05/1983, 9.11
06/1983, 9.52
07/1983, 9.53
08/1983, 9.72
09/1983, 9.58
10/1983, 9.66
11/1983, 9.74
12/1983, 9.89
01/1984, 9.63
02/1984, 9.64
03/1984, 9.94
04/1984, 9.96
05/1984, 10.49
06/1984, 10.67
07/1984, 10.42
08/1984, 9.99
09/1984, 10.10
10/1984, 10.25
11/1984, 10.17
12/1984, 9.95
01/1985, 9.51
02/1985, 9.65
03/1985, 9.77
04/1985, 9.42
05/1985, 9.01
06/1985, 8.69
07/1985, 8.81
08/1985, 9.08
09/1985, 9.27
10/1985, 9.08
11/1985, 8.54
12/1985, 8.42
01/1986, 8.08
02/1986, 7.44
03/1986, 7.08
04/1986, 7.19
05/1986, 7.54
06/1986, 7.87
07/1986, 7.51
08/1986, 7.21
09/1986, 7.11
10/1986, 7.08
11/1986, 6.84
12/1986, 6.87
01/1987, 6.66
02/1987, 6.61
03/1987, 6.65
04/1987, 7.55
05/1987, 8.00
06/1987, 7.79
07/1987, 7.72
08/1987, 7.82
09/1987, 8.26
10/1987, 8.70
11/1987, 7.95
12/1987, 7.96
01/1988, 7.69
02/1988, 7.49
03/1988, 7.74
04/1988, 7.81
05/1988, 7.91
06/1988, 7.78
07/1988, 7.76
08/1988, 7.79
09/1988, 7.66
10/1988, 7.46
11/1988, 7.46
12/1988, 7.61
01/1989, 7.35
02/1989, 7.44
03/1989, 7.59
04/1989, 7.49
05/1989, 7.25
06/1989, 7.02
07/1989, 6.96
08/1989, 7.06
09/1989, 7.26
10/1989, 7.22
11/1989, 7.14
12/1989, 6.98
01/1990, 7.10
02/1990, 7.22
03/1990, 7.29
04/1990, 7.39
05/1990, 7.35
06/1990, 7.24
07/1990, 7.19
08/1990, 7.32
09/1990, 7.43
10/1990, 7.49
11/1990, 7.18
12/1990, 7.09
01/1991, 7.08
02/1991, 6.91
03/1991, 7.10
04/1991, 7.02
05/1991, 6.95
06/1991, 7.13
07/1991, 7.05
08/1991, 6.90
09/1991, 6.80
10/1991, 6.68
11/1991, 6.73
12/1991, 6.69
01/1992, 6.54
02/1992, 6.74
03/1992, 6.76
04/1992, 6.67
05/1992, 6.57
06/1992, 6.49
07/1992, 6.13
08/1992, 6.16
09/1992, 6.25
10/1992, 6.41
11/1992, 6.36
12/1992, 6.22
01/1993, 6.16
02/1993, 5.87
03/1993, 5.64
04/1993, 5.76
05/1993, 5.73
06/1993, 5.63
07/1993, 5.57
08/1993, 5.45
09/1993, 5.29
10/1993, 5.25
11/1993, 5.47
12/1993, 5.35
01/1994, 5.31
02/1994, 5.40
03/1994, 5.91
04/1994, 6.23
05/1994, 6.19
06/1994, 6.11
07/1994, 6.23
08/1994, 6.21
09/1994, 6.28
10/1994, 6.52
11/1994, 6.97
12/1994, 6.80
01/1995, 6.53
02/1995, 6.22
03/1995, 6.10
04/1995, 6.02
05/1995, 5.95
06/1995, 5.84
07/1995, 5.92
08/1995, 6.06
09/1995, 5.91
10/1995, 5.80
11/1995, 5.64
12/1995, 5.45
01/1996, 5.43
02/1996, 5.43
03/1996, 5.79
04/1996, 5.94
05/1996, 5.98
06/1996, 6.02
07/1996, 5.92
08/1996, 5.76
09/1996, 5.87
10/1996, 5.72
11/1996, 5.59
12/1996, 5.64
01/1997, 5.72
02/1997, 5.63
03/1997, 5.76
04/1997, 5.88
05/1997, 5.70
06/1997, 5.53
07/1997, 5.35
08/1997, 5.41
09/1997, 5.39
10/1997, 5.38
11/1997, 5.33
12/1997, 5.19
01/1998, 5.06
02/1998, 5.10
03/1998, 5.21
04/1998, 5.23
05/1998, 5.20
06/1998, 5.12
07/1998, 5.14
08/1998, 5.10
09/1998, 4.99
10/1998, 4.93
11/1998, 5.03
12/1998, 4.98
01/1999, 5.01
02/1999, 5.03
03/1999, 5.10
04/1999, 5.08
05/1999, 5.18
06/1999, 5.37
07/1999, 5.36
08/1999, 5.58
09/1999, 5.69
10/1999, 5.92
11/1999, 5.86
12/1999, 5.95
01/2000, 6.08
02/2000, 6.00
03/2000, 5.83
04/2000, 5.75
05/2000, 6.00
06/2000, 5.80
07/2000, 5.63
08/2000, 5.51
09/2000, 5.56
10/2000, 5.59
11/2000, 5.54
12/2000, 5.22
01/2001, 5.10
02/2001, 5.18
03/2001, 5.13
04/2001, 5.27
05/2001, 5.29
06/2001, 5.20
07/2001, 5.20
08/2001, 5.03
09/2001, 5.09
10/2001, 5.05
11/2001, 5.04
12/2001, 5.25
01/2002, 5.16
02/2002, 5.11
03/2002, 5.29
04/2002, 5.22
05/2002, 5.19
06/2002, 5.09
07/2002, 5.02
08/2002, 4.95
09/2002, 4.74
10/2002, 4.88
11/2002, 4.95
12/2002, 4.85
01/2003, 4.90
02/2003, 4.81
03/2003, 4.76
04/2003, 4.74
05/2003, 4.41
06/2003, 4.33
07/2003, 4.74
08/2003, 5.10
09/2003, 4.92
10/2003, 4.89
11/2003, 4.73
12/2003, 4.65
01/2004, 4.61
02/2004, 4.55
03/2004, 4.41
04/2004, 4.82
05/2004, 5.07
06/2004, 5.05
07/2004, 4.87
08/2004, 4.70
09/2004, 4.56
10/2004, 4.49
11/2004, 4.52
12/2004, 4.48
01/2005, 4.41
02/2005, 4.35
03/2005, 4.57
04/2005, 4.46
05/2005, 4.31
06/2005, 4.23
07/2005, 4.31
08/2005, 4.32
09/2005, 4.29
10/2005, 4.49
11/2005, 4.57
12/2005, 4.46
01/2006, 4.37
02/2006, 4.41
03/2006, 4.44
04/2006, 4.58
05/2006, 4.59
06/2006, 4.60
07/2006, 4.61
08/2006, 4.39
09/2006, 4.27
10/2006, 4.30
11/2006, 4.14
12/2006, 4.11
01/2007, 4.23
02/2007, 4.22
03/2007, 4.15
04/2007, 4.26
05/2007, 4.31
06/2007, 4.60
07/2007, 4.56
08/2007, 4.64
09/2007, 4.51
10/2007, 4.39
11/2007, 4.46
12/2007, 4.42
01/2008, 4.27
02/2008, 4.64
03/2008, 4.93
04/2008, 4.70
05/2008, 4.58
06/2008, 4.69
07/2008, 4.68
08/2008, 4.69
09/2008, 4.86