1969 01 -2.73 -10.14  -6.43 
1969 02 -3.66 -12.08  -7.87 
1969 03 -1.99 -11.21  -6.60 
1969 04  5.71  -6.00   -.14 
1969 05 13.80   1.46   7.63 
1969 06 13.19   2.64   7.91 
1969 07 20.72  10.76  15.74 
1969 08 21.24  11.25  16.24 
1969 09 16.09   6.22  11.15 
1969 10  2.96  -5.43  -1.23 
1969 11   .43  -6.09  -2.83 
1969 12 -1.65  -8.63  -5.14 
1970 01 -4.34 -10.85  -7.59 
1970 02  -.61  -8.05  -4.33 
1970 03 -2.33 -11.49  -6.91 
1970 04   .71  -9.26  -4.27 
1970 05 11.15    .48   5.81 
1970 06 16.94   5.83  11.38 
1970 07 20.58  10.50  15.54 
1970 08 20.99  11.21  16.10 
1970 09 13.28   2.17   7.72 
1970 10  4.62  -3.57    .52 
1970 11   .33  -6.20  -2.93 
1970 12 -4.17 -11.06  -7.62 
1971 01 -4.23 -11.20  -7.71 
1971 02 -4.84 -12.43  -8.63 
1971 03 -1.56 -11.63  -6.59 
1971 04  4.15  -5.61   -.73 
1971 05  8.43  -1.13   3.65 
1971 06 16.01   5.54  10.77 
1971 07 20.92  10.86  15.89 
1971 08 20.20  10.74  15.47 
1971 09 12.37   1.56   6.96 
1971 10  4.88  -4.04    .42 
1971 11  -.89  -7.73  -4.31 
1971 12 -6.12 -13.35  -9.73 
1972 01 -5.15 -12.30  -8.72 
1972 02 -1.80  -9.46  -5.63 
1972 03  2.77  -6.79  -2.01 
1972 04  4.01  -5.92   -.95 
1972 05 11.21    .42   5.81 
1972 06 16.45   6.10  11.27 
1972 07 20.87  10.16  15.51 
1972 08 20.58   9.47  15.03 
1972 09 13.33   3.62   8.47 
1972 10  5.82   -.99   2.41 
1972 11 -2.41  -7.90  -5.15 
1972 12 -5.50 -12.33  -8.91 
1973 01 -5.00 -11.91  -8.45 
1973 02 -2.44  -9.67  -6.05 
1973 03  -.88  -9.97  -5.43 
1973 04  2.52  -7.77  -2.62 
1973 05 10.67    . 2   5.34 
1973 06 14.87   4.60   9.73 
1973 07 19.67   9.85  14.76 
1973 08 19.48  10.04  14.76 
1973 09 12.60   3.14   7.87 
1973 11   .-1  -6.70  -3.35 
1973 12 -2.02 -11.18  -6.60 
1974 01 -5.46 -12.45  -8.95 
1974 02 -2.28 -11.07  -6.67 
1974 03  1.70  -6.94  -2.62 
1974 04  3.56  -6.37  -1.40 
1974 05 10.83    .99   5.91 
1974 06 18.92   8.83  13.87 
1974 07 20.83  10.66  15.74 
1974 08 18.92   8.35  13.63 
1974 09 16.21   5.87  11.04 
1974 10  8.47    .95   4.71 
1974 11   .33  -6.02  -2.84 
1974 12 -5.86 -11.58  -8.72 
1975 01 -4.35 -11.63  -7.99 
1975 02 -4.54 -11.22  -7.88 
1975 03 -1.43  -9.46  -5.44 
1975 04  -.18  -9.43  -4.80 
1975 05  6.65  -3.80   1.42 
1975 06 12.51   2.67   7.59 
1975 07 20.82  11.81  16.31 
1975 08 19.11  10.22  14.67 
1975 09 12.90   4.08   8.49 
1975 10  4.40  -3.55    .42 
1975 11  -.94  -8.25  -4.59 
1975 12 -1.34  -7.90  -4.62 
1976 01 -2.76 -10.13  -6.44 
1976 02  -.51  -6.93  -3.71 
1976 03 -1.60 -11.41  -6.50 
1976 04  4.58  -4.78   -.10 
1976 05 12.10   1.08   6.59 
1976 07 21.74  12.09  16.91 
1976 08 19.04   8.87  13.95 
1976 09 14.97   5.83  10.40 
1976 10  7.96    .33   4.14 
1976 11  2.08  -4.07   -.99 
1976 12 -1.39  -7.71  -4.55 
1977 01 -4.64 -10.55  -7.59 
1977 02 -1.53  -7.72  -4.62 
1977 03 -2.40 -11.05  -6.72 
1977 04  7.22  -1.98   2.62 
1977 05  6.88  -1.76   2.56 
1977 06 20.97  10.80  15.88 
1977 07 20.63  10.84  15.73 
1977 08 19.36   9.72  14.54 
1977 12 -1.64  -7.85  -4.74 
