1.898996 6.4509% 1972 0.315465 3.169929 4.7304% 1971 3.415395 0.292792 5.7132% 1970 6.176549 0.161903 5.5272% 1969 4.974911 0.201009 5.5714% 1968 2.877821 0.347485 5.0148% 1967 5.358441 0.186621 2.5719% 1966 0.160408 6.234096 3.5485%