1971 08 22.62  14.21  18.41 
1971 09 21.22  13.69  17.45 
1971 10 17.50  10.40  13.95 
1971 11  6.80    .73   3.76 
1971 12  3.21  -2.90    .15 
1972 01 -1.15  -8.01  -4.58 
1972 02 -2.76 -10.59  -6.67 
1972 03  -.83  -7.95  -4.39 
1972 04  5.17  -2.08   1.54 
1972 05 99.99   6.40 -99.99 
1972 06 17.37   8.12  12.75 
1972 07 22.51  13.84  18.17 
1972 08 21.43  14.28  17.85 
1972 09 18.93  11.76  15.34 
1972 10 10.67   4.34   7.50 
1972 11  4.77    .26   2.51 
1972 12   .58  -5.16  -2.28 
1973 01   .25  -6.69  -3.22 
1973 02 -2.28 -11.52  -6.90 
1973 03  6.96    .12   3.54 
1973 04  9.43   1.87   5.65 
1973 05 14.03   4.86   9.44 
1973 06 21.55  13.58  17.56 
1973 07 24.17  17.11  20.64 
1973 08 24.55  18.23  21.39 
1973 09 19.83  12.36  16.09 
1973 10 15.43   8.85  12.14 
1973 11  6.77   1.28   4.02 
1973 12   .-7  -5.19  -2.63 
1974 01  -.84  -7.14  -3.99 
1974 02 -3.43 -10.61  -7.02 
1974 03  1.26  -4.60  -1.67 
1974 04 10.05   1.04   5.55 
1974 05 12.82   3.99   8.40 
1974 06 99.99  11.18 -99.99 
1974 07 23.37  15.00  19.18 
1974 08 23.46  15.95  19.70 
1974 09 17.67  10.27  13.97 
1974 10 12.13   5.34   8.73 
1974 11  6.71   1.27   3.99 
1974 12  1.94  -2.62   -.33 
1975 01   .68  -6.09  -2.70 
1975 02 -1.09  -6.20  -3.64 
1975 03   .87  -5.32  -2.22 
1975 04  5.73   -.97   2.38 
1975 05 18.82   8.22  13.52 
1975 06 21.08  12.98  17.02 
1975 07 24.34  16.93  20.63 
1975 08 23.17  16.00  19.58 
1975 09 16.95  10.35  13.65 
1975 10 14.50   7.61  11.05 
1975 11 10.18   4.51   7.35 
1975 12   .60  -6.08  -2.74 
1976 01 -3.54 -11.33  -7.43 
1976 02  1.10  -6.45  -2.67 
1976 03  4.87  -4.06    .40 
1976 04 10.32   2.65   6.48 
1976 05 13.67   5.76   9.71 
1976 06 22.42  12.99  17.70 
1976 07 22.04  14.45  18.24 
1976 08 22.77  14.61  18.69 
1976 09 18.71  11.15  14.93 
1976 10 10.82   4.63   7.72 
1976 11  3.91  -1.35   1.28 
1976 12 -1.79  -9.91  -5.85 
1977 01 -6.12 -13.03  -9.57 
1977 02 -2.99 -11.02  -7.00 
1977 03  5.74  -2.05   1.84 
1977 04 11.55   1.03   6.29 
1977 05 18.39   6.91  12.65 
1977 06 19.02   9.28  14.15 
1977 07 23.95  15.70  19.82 
1977 08 22.03  14.46  18.24 
1977 09 19.04  12.84  15.94 
1977 10 12.51   5.83   9.17 
