11427700 1961 16.1 102 1 19610404 0.30 11 11427700 1962 29.7 196 1 19620505 0.40 7 11427700 1963 43.1 1360 1 19630131 0.40 3 11427700 1964 25.3 208 1 19640519 0.20 3 11427700 1965 56.3 2300 1 19641222 0.50 12 11427700 1966 19.8 145 1 19660510 0.40 8 11427700 1967 50.1 376 2 0.60 10 11427700 1968 24.9 300 1 19680220 0.90 8 11427700 1969 53.9 752 1 19690120 0.72 1 19690930 11427700 1970 42.4 1210 1 19700121 0.39 2 11427700 1971 39.7 196 2 0.39 6 11427700 1972 26.9 143 2 0.52 2 11427700 1973 40.7 336 1 19730112 0.54 4 11427700 1974 55.7 421 1 19740119 0.97 2 11427700 1975 33.8 300 1 19750601 0.74 13 11427700 1976 11.7 138 1 19751026 0.22 1 19760920 11427700 1977 4.27 37.0 1 19770526 0.10 9 11427700 1978 45.2 284 1 19771229 0.12 8 11427700 1979 27.5 254 1 19790521 0.34 5 11427700 1980 51.8 1560 1 19800113 0.41 7 11427700 1981 15.6 131 1 19810501 0.24 2 11427700 1982 86.8 1270 1 19811220 0.60 1 19811002 11427700 1983 82.2 594 1 19830313 1.60 5 11427700 1984 58.2 884 1 19831117 0.65 1 19840917 11427700 1985 23.1 198 1 19850415 0.46 2 11427700 1986 61.9 2230 1 19860217 0.59 4 11427700 1987 14.2 258 1 19870213 0.39 5 11427700 1988 15.5 131 1 19880105 0.30 3