1978 9.139303 0.109418 7.2813% 1977 2.598402 0.384852 6.6558% 1976 0.802792 1.245652 6.4073% 1975 0.452537 2.209766 9.8159% 1974 6.207021 0.161108 9.0909% 1973 6.874602 0.145463 6.4509% 1972 6.370053