1969 10 36.80  24.70  30.75 
1969 11 35.30  20.20  27.75 
1969 12 34.00  17.00  25.50 
1970 01 32.00  15.90  23.95 
1970 02 31.80  16.50  24.15 
1970 03 36.70  20.10  28.40 
1970 04 40.20  24.30  32.25 
1970 05 39.09  26.20  32.65 
1970 06 39.09  25.70  32.40 
1970 07 36.00  25.20  30.60 
1970 08 31.90  23.60  27.75 
1970 09 32.90  23.60  28.25 
1970 10 36.90  21.80  29.35 
1970 11 33.59  18.50  26.05 
1970 12 30.70  14.50  22.60 
1971 01 29.70  13.50  21.60 
1971 02 34.20  16.70  25.45 
1971 03 39.70  22.20  30.95 
1971 04 39.20  22.80  31.00 
1971 05 39.00  25.10  32.05 
1971 06 37.59  25.60  31.59 
1971 07 33.90  24.90  29.40 
1971 08 30.90  23.20  27.05 
1971 09 34.30  23.20  28.75 
1971 10 36.90  22.00  29.45 
1971 11 34.40  17.70  26.05 
1971 12 30.20  14.90  22.55 
1972 01 30.40  14.60  22.50 
1972 02 33.80  17.79  25.80 
1972 03 38.40  21.80  30.10 
1972 04 39.70  24.20  31.95 
1972 05 38.70  26.70  32.70 
1972 06 37.00  26.40  31.70 
1972 07 35.70  26.50  31.10 
1972 08 33.50  24.90  29.20 
1972 09 35.59  25.40  30.50 
1972 10 36.59  23.70  30.15 
1972 11 32.30  17.10  24.70 
1972 12 32.20  16.00  24.10 
1973 01 32.30  15.90  24.09 
1973 02 35.59  18.20  26.90 
1973 03 37.70  20.50  29.10 
1973 04 41.00  25.10  33.05 
1973 05 40.40  24.70  32.55 
1973 06 39.20  25.50  32.34 
1973 07 35.90  24.20  30.05 
1973 08 33.00  22.90  27.95 
1973 09 35.20  22.90  29.05 
1973 10 37.70  21.00  29.35 
1973 11 31.70  15.00  23.35 
1973 12 33.70  14.40  24.05 
1974 01 28.10  12.30  20.20 
1974 02 33.70  15.10  24.40 
1974 03 36.70  17.79  27.25 
1974 04 40.00  23.10  31.55 
1974 05 38.40  23.00  30.70 
1974 06 37.50  24.30  30.90 
1974 07 31.30  22.90  27.09 
1974 08 32.09  22.70  27.40 
1974 09 33.59  22.80  28.20 
1974 10 38.30  20.50  29.40 
1974 11 34.50  17.50  26.00 
1974 12 28.80  12.30  20.55 
1975 01 27.10  10.50  18.79 
1975 02 32.80  15.20  24.00 
1975 03 37.59  18.70  28.15 
1975 04 39.59  21.60  30.59 
1975 05 38.70  24.10  31.40 
1975 06 37.20  23.20  30.20 
1975 07 33.20  23.00  28.10 
1975 08 32.30  22.60  27.45 
1975 09 33.30  22.30  27.80 
1975 10 36.90  19.20  28.05 
1975 11 35.50  16.60  26.05 
1975 12 30.80  12.20  21.50 
1976 01 30.70  11.80  21.25 
1976 02 35.40  16.20  25.80 
1976 03 36.30  17.20  26.75 
1976 04 39.20  22.40  30.80 
1976 05 38.80  23.40  31.09 
1976 06 35.80  23.90  29.84 
1976 07 33.80  23.50  28.65 
1976 08 33.30  22.40  27.84 
1976 09 34.80  22.60  28.70 
1976 10 36.70  22.10  29.40 
1976 11 35.20  15.90  25.55 
1976 12 33.00  12.90  22.95 
1977 01 31.20  12.00  21.60 
1977 02 32.59  12.90  22.75 
1977 03 34.30  17.40  25.84 
1977 04 39.50  20.80  30.15 
1977 05 39.00  23.50  31.25 
1977 06 37.59  23.90  30.75 
1977 07 34.90  23.10  29.00 
1977 08 31.40  21.80  26.59 
1977 09 35.40  22.50  28.95 
1977 10 36.90  19.50  28.20 
1977 11 34.20  14.20  24.20 
1977 12 29.30  11.30  20.29 
1978 01 30.50  10.50  20.50 
1978 02 34.00  14.10  24.05 
1978 03 37.59  18.40  28.00 
1978 04 39.20  23.90  31.55 
1978 05 38.80  23.30  31.05 
1978 07 31.60  22.80  27.20 
1978 08 32.50  22.40  27.45 
1978 09 34.40  21.60  28.00 
1978 10 37.80  20.80  29.30 
1978 12 31.30  12.70  22.00 
