1967 02   -.71  -8.58  -4.64 
1967 03   -.50 -10.25  -5.37 
1967 04   4.17  -5.13   -.47 
1967 05   9.22   1.59   5.41 
1967 06  17.96   7.74  12.85 
1967 07  17.85   8.72  13.29 
1967 08  21.13  11.15  16.14 
1967 09  15.59   7.97  11.78 
1967 10   4.38  -1.56   1.41 
1967 11  -1.58  -6.57  -4.07 
1967 12  -5.30 -12.50  -8.89 
1968 01  -6.40 -12.61  -9.50 
1968 02   2.33  -6.15  -1.91 
1968 03   0.77  -5.28  -2.25 
1968 04 -99.99  -6.66 -99.99 
1968 05   9.02   -.26   4.38 
1968 06  11.47   2.02   6.74 
1968 07  17.43   7.41  12.42 
1968 08  13.80   5.97   9.88 
1968 09  10.12   2.96   6.54 
1968 10   3.08  -2.41   0.33 
1968 11  -1.97  -6.48  -4.22 
1968 12 -99.99 -16.31 -99.99 
1969 01 -99.99 -21.53 -99.99 
1969 02  -3.19 -10.92  -7.05 
1969 03 -99.99  -7.08 -99.99 
1969 04   5.07  -1.83   1.62 
1969 05  11.98   1.59   6.78 
1969 06  18.35   7.24  12.79 
1969 07  15.20   5.24  10.21 
1969 08  14.00   5.39   9.69 
1969 09   9.97   2.36   6.17 
1969 10   5.21  -1.76   1.72 
1969 11   0.69  -4.78  -2.04 
1969 12  -2.76  -8.38  -5.57 
1970 01  -6.55 -13.41  -9.97 
1970 02   1.16  -7.06  -2.95 
1970 03 -99.99  -8.55 -99.99 
1970 04   3.65  -6.21  -1.28 
1970 05   9.22   -.12   4.55 
1970 06  17.29   5.13  11.21 
1970 07  18.84   7.68  13.26 
1970 08  18.28   6.99  12.63 
1970 09   9.33   0.57   4.94 
1970 10 -99.99  -2.71 -99.99 
1970 11  -1.96 -99.99 -99.99 
1970 12  -6.40 -99.99 -99.99 
1971 05 -99.99   2.79 -99.99 
1971 06  12.48 -99.99 -99.99 
1971 07  20.27   6.02  13.14 
1971 08  19.70   7.71  13.70 
1971 09   8.81   -.48   4.16 
1971 10   4.71  -7.45  -1.36 
1971 11   -.90  -8.13  -4.51 
1974 05   6.35  -1.20   2.57 
1974 06  14.34   2.76   8.55 
1974 07  14.81   4.80   9.80 
1974 08  17.98   6.95  12.46 
1974 09  14.74 -99.99 -99.99 
1974 10   7.43   -.36   3.53 
1974 11  -1.62  -6.78  -4.20 
1974 12  -4.07  -8.33  -6.20 
1975 01  -7.74 -14.21 -10.97 
1975 02  -7.75 -16.02 -11.88 
1975 03  -2.64 -10.33  -6.48 
1975 04   4.05  -5.79   -.86 
1975 05   9.08  -0.08   4.50 
1975 06  12.28   2.48   7.38 
1975 07  18.71   8.37  13.54 
1975 08  12.57   3.83   8.20 
1975 09  14.46   4.15   9.30 
1975 10   3.27  -1.95   0.66 
1975 11  -2.97  -8.33  -5.65 
1975 12  -3.68  -9.78  -6.73 
1976 01  -3.27  -9.22  -6.24 
1976 02  -3.85 -10.39  -7.12 
1976 03  -2.56 -10.47  -6.51 
1976 04   5.04  -2.99   1.02 
1976 05   8.53   0.63   4.58 
1976 06  10.31   1.96   6.13 
1976 07  14.53   5.43   9.97 
1976 08  13.31   6.40   9.85 
1976 09  14.28   4.83   9.55 
1976 10   4.94  -1.34   1.80 
1976 11   0.74  -5.49  -2.37 
1976 12  -1.95  -7.45  -4.69 
1977 01  -3.96 -10.66  -7.31 
1977 02   0.46  -5.49  -2.51 
1977 03  -1.48  -8.68  -5.08 
1977 04   6.87  -2.76   2.05 
1977 05   8.05  -0.09   3.98 
1977 06  14.04   3.87   8.95 
1977 07  14.55   6.17  10.36 
1977 08  17.70   8.20  12.95 
1977 09   8.57   1.52   5.04 
1977 10   4.59  -1.81   1.39 
1977 11  -4.35  -9.81  -7.08 
1977 12  -7.80 -14.98 -11.39 
1978 01  -4.76 -12.71  -8.73 
1978 02  -1.29  -8.45  -4.87 
1978 03   1.35  -6.42  -2.53 
1978 04   4.59  -2.52   1.03 
1978 05   8.28   -.47   3.90 
1978 06  15.90   5.16  10.53 
1978 07  18.94   8.37  13.65 
1978 08  15.65   6.46  11.05 
1978 09   9.24   2.60   5.92 
1978 10   6.34   -.61   2.86 
1978 11  -4.11 -10.93  -7.52 
1978 12  -8.25 -14.93 -11.59 
1979 01  -9.04 -18.70 -13.87 
1979 02  -4.39 -13.20  -8.79 
1979 03   2.58  -7.08  -2.25 
1979 04   4.84  -4.98  -0.06 
1979 05   9.20   0.63   4.91 
1979 06  13.67   3.37   8.52 
1979 07  19.02   7.87  13.44 
1979 08  19.31   7.84  13.57 
1979 09  14.53   4.62   9.57 
1979 10   8.21   -.15   4.03 
1979 11   0.68  -7.08  -3.20 
1979 12  -2.36  -9.22  -5.80 
1980 01  -8.89 -17.53 -13.21 
1980 02  -1.34  -7.83  -4.58 
1980 03  -1.08  -9.39  -5.24 
1980 04   8.07  -2.36   2.85 
1980 05  11.73   2.66   7.19 
1980 06  13.67   4.67   9.17 
1980 07  15.84   6.45  11.14 
1980 08  14.45   4.76   9.60 
1980 09  11.53   2.32   6.92 
1980 10   8.39   -.18   4.10 
1980 11  -0.02  -5.98  -3.00 
1980 12  -4.34 -11.85  -8.09 
1981 01   0.94  -4.79  -1.92 
1981 02   -.95  -9.22  -5.08 
1981 03   3.18  -6.18  -1.49 
1981 04   3.62  -5.08   -.73 
1981 05  10.77   1.17   5.97 
1981 06  10.07   2.32   6.19 
1981 07  17.85   6.05  11.95 
1981 08  21.10   9.60  15.35 
1981 09  12.17   3.72   7.94 
1981 10   5.02  -2.26   1.38 
1981 11   0.67  -5.05  -2.19 
1981 12  -4.65 -12.63  -8.64 
1982 01  -7.56 -15.26 -11.41 
1982 02  -4.92 -12.41  -8.67 
1982 03   -.15 -10.13  -5.14 
1982 04   3.47  -4.46   -.49 
1982 05   9.68   0.61   5.14 
1982 06  17.62   4.77  11.19 
1982 07  15.13   6.41  10.77 
1982 08  14.61   5.19   9.89 
1982 09  13.22   3.95   8.58 
1982 10   4.85  -2.47   1.18 
1982 11  -4.10 -11.37  -7.73 
1982 12  -4.66 -11.03  -7.84 
1983 01  -2.21  -7.40  -4.80 
1983 02  -1.55  -7.55  -4.55 
1983 03   1.85 -99.99 -99.99 
1983 04   6.42  -3.85   1.28 
1983 05 -99.99   1.58 -99.99 
1983 06  11.86   4.35   8.10 
1983 07  14.85   6.76  10.80 
1983 08  17.81   8.56  13.18 
1983 09   9.13   1.62   5.37 
1983 10   4.89  -1.05   1.91 
1983 11  -1.16  -4.92  -3.04 
1983 12 -10.56 -17.29 -13.92 
1984 01  -3.37  -9.66  -6.51 
