6.174703 4.7304% 1971 6.166311 0.162172 5.7132% 1970 3.442629 0.290476 5.5272% 1969 5.685945 0.175872 5.5714% 1968 2.464049 0.405836 5.0148% 1967 4.917908 0.203338 2.5719% 1966 1.035485 0.965731 3.5485%