,Instrument,"U.S. government securities/Treasury bills (secondary market)"
  ,Maturity,"6-month"
  ,Frequency,"Monthly"
  ,Description,"6-month Treasury bill secondary market rate discount basis"
  ,Note,"Annualized using a 360-day year or bank interest."
  ,Note,"On a discount basis."


DATE      , TBM6
12/1958, 3.01
01/1959, 3.09
02/1959, 3.13
03/1959, 3.13
04/1959, 3.27
05/1959, 3.33
06/1959, 3.52
07/1959, 3.82
08/1959, 3.87
09/1959, 4.70
10/1959, 4.53
11/1959, 4.54
12/1959, 4.85
01/1960, 4.74
02/1960, 4.30
03/1960, 3.61
04/1960, 3.55
05/1960, 3.58
06/1960, 2.74
07/1960, 2.71
08/1960, 2.59
09/1960, 2.83
10/1960, 2.73
11/1960, 2.66
12/1960, 2.50
01/1961, 2.47
02/1961, 2.60
03/1961, 2.54
04/1961, 2.47
05/1961, 2.45
06/1961, 2.54
07/1961, 2.45
08/1961, 2.66
09/1961, 2.68
10/1961, 2.66
11/1961, 2.70
12/1961, 2.88
01/1962, 2.94
02/1962, 2.93
03/1962, 2.87
04/1962, 2.83
05/1962, 2.78
06/1962, 2.80
07/1962, 3.08
08/1962, 2.99
09/1962, 2.93
10/1962, 2.84
11/1962, 2.89
12/1962, 2.91
01/1963, 2.96
02/1963, 2.98
03/1963, 2.95
04/1963, 2.98
05/1963, 3.01
06/1963, 3.08
07/1963, 3.31
08/1963, 3.44
09/1963, 3.50
10/1963, 3.58
11/1963, 3.65
12/1963, 3.66
01/1964, 3.64
02/1964, 3.67
03/1964, 3.72
04/1964, 3.66
05/1964, 3.60
06/1964, 3.56
07/1964, 3.56
08/1964, 3.61
09/1964, 3.68
10/1964, 3.72
11/1964, 3.81
12/1964, 3.95
01/1965, 3.94
02/1965, 4.00
03/1965, 4.00
04/1965, 3.99
05/1965, 3.95
06/1965, 3.86
07/1965, 3.90
08/1965, 3.95
09/1965, 4.07
10/1965, 4.19
11/1965, 4.24
12/1965, 4.55
01/1966, 4.71
02/1966, 4.82
03/1966, 4.78
04/1966, 4.74
05/1966, 4.81
06/1966, 4.65
07/1966, 4.93
08/1966, 5.27
09/1966, 5.79
10/1966, 5.62
11/1966, 5.54
12/1966, 5.07
01/1967, 4.74
02/1967, 4.59
03/1967, 4.22
04/1967, 3.89
05/1967, 3.80
06/1967, 3.89
07/1967, 4.72
08/1967, 4.83
09/1967, 4.96
10/1967, 5.07
11/1967, 5.25
12/1967, 5.49
01/1968, 5.24
02/1968, 5.17
03/1968, 5.33
04/1968, 5.49
05/1968, 5.83
06/1968, 5.64
07/1968, 5.41
08/1968, 5.23
09/1968, 5.25
10/1968, 5.41
11/1968, 5.60
12/1968, 6.06
01/1969, 6.28
02/1969, 6.30
03/1969, 6.16
04/1969, 6.13
05/1969, 6.15
06/1969, 6.75
07/1969, 7.24
08/1969, 7.19
09/1969, 7.32
10/1969, 7.29
11/1969, 7.62
12/1969, 7.90
01/1970, 7.78
02/1970, 7.22
03/1970, 6.58
04/1970, 6.60
05/1970, 7.02
06/1970, 6.86
07/1970, 6.51
08/1970, 6.55
09/1970, 6.46
10/1970, 6.21
11/1970, 5.42
12/1970, 4.89
01/1971, 4.47
02/1971, 3.78
03/1971, 3.50
04/1971, 4.03
05/1971, 4.36
06/1971, 4.97
07/1971, 5.63
08/1971, 5.22
09/1971, 4.97
10/1971, 4.60
11/1971, 4.38
12/1971, 4.23
01/1972, 3.66
02/1972, 3.63
03/1972, 4.12
04/1972, 4.23
05/1972, 4.12
06/1972, 4.35
07/1972, 4.50
08/1972, 4.55
09/1972, 5.13
10/1972, 5.13
11/1972, 5.09
12/1972, 5.30
01/1973, 5.62
02/1973, 5.83
03/1973, 6.51
04/1973, 6.52
05/1973, 6.62
06/1973, 7.23
07/1973, 8.12
08/1973, 8.65
09/1973, 8.45
10/1973, 7.32
11/1973, 7.96
12/1973, 7.56
01/1974, 7.65
02/1974, 6.96
03/1974, 7.83
04/1974, 8.32
05/1974, 8.40
06/1974, 8.12
07/1974, 7.94
08/1974, 9.11
09/1974, 8.53
10/1974, 7.74
11/1974, 7.52
12/1974, 7.11
01/1975, 6.36
02/1975, 5.62
03/1975, 5.62
04/1975, 6.00
05/1975, 5.59
06/1975, 5.61
07/1975, 6.50
08/1975, 6.94
09/1975, 6.92
10/1975, 6.25
11/1975, 5.80
12/1975, 5.85
01/1976, 5.14
02/1976, 5.20
03/1976, 5.44
04/1976, 5.18
05/1976, 5.62
06/1976, 5.77
07/1976, 5.53
08/1976, 5.40
09/1976, 5.30
10/1976, 5.06
11/1976, 4.88
12/1976, 4.51
01/1977, 4.83
02/1977, 4.90
03/1977, 4.88
04/1977, 4.80
05/1977, 5.20
06/1977, 5.21
07/1977, 5.40
08/1977, 5.83
09/1977, 6.04
10/1977, 6.43
11/1977, 6.41
12/1977, 6.40
01/1978, 6.70
02/1978, 6.74
03/1978, 6.63
04/1978, 6.73
05/1978, 7.02
06/1978, 7.23
07/1978, 7.44
08/1978, 7.37
09/1978, 7.99
10/1978, 8.55
11/1978, 9.24
12/1978, 9.36
01/1979, 9.47
02/1979, 9.41
03/1979, 9.47
04/1979, 9.49
05/1979, 9.54
06/1979, 9.06
07/1979, 9.24
08/1979, 9.49
09/1979, 10.20
10/1979, 11.66
11/1979, 11.82
12/1979, 11.84
01/1980, 11.84
02/1980, 12.86
03/1980, 15.03
04/1980, 12.88
05/1980, 8.65
06/1980, 7.30
07/1980, 8.06
08/1980, 9.41
09/1980, 10.57
10/1980, 11.63
11/1980, 13.50
12/1980, 14.64
01/1981, 14.08
02/1981, 14.05
03/1981, 12.81
04/1981, 13.45
05/1981, 15.29
06/1981, 14.09
07/1981, 14.74
08/1981, 15.52
09/1981, 14.92
10/1981, 13.82
11/1981, 11.30
12/1981, 11.52
01/1982, 12.83
02/1982, 13.61
03/1982, 12.77
04/1982, 12.80
05/1982, 12.16
06/1982, 12.70
07/1982, 11.88
08/1982, 9.88
09/1982, 9.37
10/1982, 8.29
11/1982, 8.34
12/1982, 8.16
01/1983, 7.93
02/1983, 8.23
03/1983, 8.37
04/1983, 8.30
05/1983, 8.22
06/1983, 8.89
07/1983, 9.26
08/1983, 9.51
09/1983, 9.15
10/1983, 8.83
11/1983, 8.93
12/1983, 9.17
01/1984, 9.01
02/1984, 9.18
03/1984, 9.66
04/1984, 9.84
05/1984, 10.31
06/1984, 10.51
07/1984, 10.52
08/1984, 10.61
09/1984, 10.47
10/1984, 9.87
11/1984, 8.81
12/1984, 8.28
01/1985, 8.00
02/1985, 8.39
03/1985, 8.90
04/1985, 8.23
05/1985, 7.65
06/1985, 7.09
07/1985, 7.20
08/1985, 7.32
09/1985, 7.27
10/1985, 7.33
11/1985, 7.30
12/1985, 7.14
01/1986, 7.16
02/1986, 7.11
03/1986, 6.57
04/1986, 6.08
05/1986, 6.19
06/1986, 6.27
07/1986, 5.86
08/1986, 5.55
09/1986, 5.35
10/1986, 5.26
11/1986, 5.41
12/1986, 5.55
01/1987, 5.44
02/1987, 5.59
03/1987, 5.60
04/1987, 5.90
05/1987, 6.05
06/1987, 5.99
07/1987, 5.76
08/1987, 6.15
09/1987, 6.64
10/1987, 6.69
11/1987, 6.19
12/1987, 6.36
01/1988, 6.25
02/1988, 5.93
03/1988, 5.91
04/1988, 6.21
05/1988, 6.56
06/1988, 6.71
07/1988, 6.99
08/1988, 7.39
09/1988, 7.43
10/1988, 7.50
11/1988, 7.86
12/1988, 8.22
01/1989, 8.36
02/1989, 8.55
03/1989, 8.85
04/1989, 8.65
05/1989, 8.41
06/1989, 7.93
07/1989, 7.61
08/1989, 7.74
09/1989, 7.74
10/1989, 7.62
11/1989, 7.49
12/1989, 7.42
01/1990, 7.55
02/1990, 7.70
03/1990, 7.85
04/1990, 7.84
05/1990, 7.76
06/1990, 7.63
07/1990, 7.52
08/1990, 7.38
09/1990, 7.32
10/1990, 7.16
11/1990, 7.03
12/1990, 6.70
01/1991, 6.28
02/1991, 5.93
03/1991, 5.92
04/1991, 5.71
05/1991, 5.61
06/1991, 5.75
07/1991, 5.70
08/1991, 5.39
09/1991, 5.25
10/1991, 5.04
11/1991, 4.61
12/1991, 4.10
01/1992, 3.87
02/1992, 3.93
03/1992, 4.18
04/1992, 3.87
05/1992, 3.75
06/1992, 3.77
07/1992, 3.28
08/1992, 3.21
09/1992, 2.96
10/1992, 3.04
11/1992, 3.34
12/1992, 3.36
01/1993, 3.14
02/1993, 3.07
03/1993, 3.05
04/1993, 2.97
05/1993, 3.07
06/1993, 3.20
07/1993, 3.16
08/1993, 3.14
09/1993, 3.06
10/1993, 3.12
11/1993, 3.26
12/1993, 3.23
01/1994, 3.15
02/1994, 3.43
03/1994, 3.78
04/1994, 4.09
05/1994, 4.60
06/1994, 4.55
07/1994, 4.75
08/1994, 4.88
09/1994, 5.04
10/1994, 5.39
11/1994, 5.72
12/1994, 6.21
01/1995, 6.21
02/1995, 6.03
03/1995, 5.89
04/1995, 5.77
05/1995, 5.67
06/1995, 5.42
07/1995, 5.37
08/1995, 5.41
09/1995, 5.30
10/1995, 5.32
11/1995, 5.27
12/1995, 5.13
01/1996, 4.92
02/1996, 4.77
03/1996, 4.96
04/1996, 5.06
05/1996, 5.12
06/1996, 5.25
07/1996, 5.30
08/1996, 5.13
09/1996, 5.24
10/1996, 5.11
11/1996, 5.07
12/1996, 5.04
01/1997, 5.10
02/1997, 5.06
03/1997, 5.26
04/1997, 5.37
05/1997, 5.30
06/1997, 5.13
07/1997, 5.12
08/1997, 5.19
09/1997, 5.09
10/1997, 5.09
11/1997, 5.17
12/1997, 5.24
01/1998, 5.03
02/1998, 5.07
03/1998, 5.04
04/1998, 5.06
05/1998, 5.14
06/1998, 5.12
07/1998, 5.03
08/1998, 4.95
09/1998, 4.63
10/1998, 4.05
11/1998, 4.42
12/1998, 4.40
01/1999, 4.33
02/1999, 4.44
03/1999, 4.47
04/1999, 4.37
05/1999, 4.56
06/1999, 4.82
07/1999, 4.58
08/1999, 4.87
09/1999, 4.88
10/1999, 4.98
11/1999, 5.20
12/1999, 5.44
01/2000, 5.50
02/2000, 5.72
03/2000, 5.85
04/2000, 5.81
05/2000, 6.10
06/2000, 5.97
07/2000, 6.00
08/2000, 6.07
09/2000, 5.98
10/2000, 6.04
11/2000, 6.06
12/2000, 5.68
01/2001, 4.95
02/2001, 4.71
03/2001, 4.28
04/2001, 3.85
05/2001, 3.62
06/2001, 3.45
07/2001, 3.45
08/2001, 3.29
09/2001, 2.63
10/2001, 2.12
11/2001, 1.88
12/2001, 1.78
01/2002, 1.73
02/2002, 1.82
03/2002, 2.01
04/2002, 1.93
05/2002, 1.86
06/2002, 1.79
07/2002, 1.70
08/2002, 1.60
09/2002, 1.60
10/2002, 1.56
11/2002, 1.27
12/2002, 1.24
01/2003, 1.20
02/2003, 1.18
03/2003, 1.13
04/2003, 1.14
05/2003, 1.08
06/2003, 0.92
07/2003, 0.95
08/2003, 1.03
09/2003, 1.01
10/2003, 1.00
11/2003, 1.02
12/2003, 0.99
01/2004, 0.97
02/2004, 0.99
03/2004, 0.99
04/2004, 1.09
05/2004, 1.31
06/2004, 1.60
07/2004, 1.66
08/2004, 1.72
09/2004, 1.87
10/2004, 2.00
11/2004, 2.27
12/2004, 2.43
01/2005, 2.61
02/2005, 2.77
03/2005, 3.00
04/2005, 3.05
05/2005, 3.08
06/2005, 3.13
07/2005, 3.42
08/2005, 3.66
09/2005, 3.67
10/2005, 3.99
11/2005, 4.15
12/2005, 4.18
01/2006, 4.31
02/2006, 4.52
03/2006, 4.62
04/2006, 4.72
05/2006, 4.82
06/2006, 4.97
07/2006, 5.06
08/2006, 4.97
09/2006, 4.89
10/2006, 4.92
11/2006, 4.95
12/2006, 4.88
01/2007, 4.95
02/2007, 4.96
03/2007, 4.89
04/2007, 4.86
05/2007, 4.78
06/2007, 4.76
07/2007, 4.83
08/2007, 4.38
09/2007, 4.05
10/2007, 4.01
11/2007, 3.46
12/2007, 3.23
01/2008, 2.75
02/2008, 2.04
03/2008, 1.48
04/2008, 1.55
05/2008, 1.82
06/2008, 2.13
07/2008, 1.93
08/2008, 1.92
09/2008, 1.61