1973 1.414296 0.707066 6.4509% 1972 6.118592 0.163436 4.7304% 1971 5.999898 0.166670 5.7132% 1970 0.665616 1.502367 5.5272% 1969 5.378369 0.185930 5.5714% 1968 0.479641 2.084891 5.0148% 1967