1 1975 1 1 36.14 2 1975 2 2 44.60 3 1975 3 3 44.15 4 1975 4 4 35.72 5 1976 1 5 36.19 6 1976 2 6 44.63 7 1976 3 7 46.95 8 1976 4 8 36.90 9 1977 1 9 39.66 10 1977 2 10 49.72 11 1977 3 11 44.49 12 1977 4 12 36.54 13 1978 1 13 41.44 14 1978 2 14 49.07 15 1978 3 15 48.98 16 1978 4 16 39.59 17 1979 1 17 44.29 18 1979 2 18 50.09 19 1979 3 19 48.42 20 1979 4 20 41.39 21 1980 1 21 46.11 22 1980 2 22 53.44 23 1980 3 23 53.00 24 1980 4 24 42.52 25 1981 1 25 44.61 26 1981 2 26 55.18 27 1981 3 27 52.24 28 1981 4 28 41.66 29 1982 1 29 47.84 30 1982 2 30 54.27 31 1982 3 31 52.31 32 1982 4 32 42.03