1978 0.372220 2.686581 7.2813% 1977 0.285174 3.506634 6.6558% 1976 2.399250 0.416797 6.4073% 1975 0.386830 2.585114 9.8159% 1974 1.161282 0.861117 9.0909% 1973 0.577591 1.731329 6.4509% 1972 0.408613 2.447301 4.7304% 1971 3.523694 0.283793 5.7132% 1970 0.320515 3.119975 5.5272% 1969 2.261369 0.442210 5.5714% 1968 2.968530 0.336867 5.0148% 1967 4.378048 0.228412 2.5719% 1966 2.777667 0.360014 3.5485% 1965 1.093855 0.914198 2.7360% 1964 0.329001 3.039508 1.5423% 1963 4.438526 0.225300 1.5697% 1962 0.801489 1.247677 2.2421% 1961 2.400023 0.416663 0.9709% 1960 3.635325 0.275079 1.6442% 1959 0.231992 4.310488 2.3579% 1958 0.787796
tethers