06288200 1968 6.97 6.99 5.59 9.48 15.4 11.8 9.65 23.1 49.3 6.21 5.65 4.95 06288200 1969 3.95 5.91 4.39 4.01 3.21 15.0 18.8 14.3 55.4 42.6 5.79 3.99 06288200 1970 5.48 6.49 3.27 4.53 5.81 12.4 28.1 121 42.9 17.7 10.1 10.4 06288200 1971 8.43 7.54 5.96 11.4 27.4 18.7 34.9 36.4 17.3 8.73 5.38 7.36 06288200 1972 36.2 12.1 4.11 5.89 47.3 60.9 47.8 59.5 17.3 10.3 20.7 6.59 06288200 1973 9.62 9.15 6.13 9.51 9.57 26.9 91.1 180 41.2 16.4 11.1 16.8 06288200 1974 9.43 14.2 5.92 16.5 8.33 12.9 45.7 49.7 95.7 34.2 13.0 15.0 06288200 1975 42.8 39.2 9.10 17.2 13.0 40.7 113 188 85.5 26.7 16.3 13.4 06288200 1976 15.1 12.6 12.8 11.9 22.7 20.7 43.9 29.1 25.0 10.5 9.14 6.33 06288200 1977 8.54 8.24 7.19 8.04 8.32 8.57 41.4 17.1 18.5 6.51 4.68 4.16