rather battered by age and country, and

1978 12.033095 0.083104 7.2813% 1977 9.094431 0.109957 6.6558% 1976 1.802873 0.554670 6.4073% 1975 7.906295 0.126481 9.8159% 1974 7.297168 0.137039 9.0909% 1973 0.276015 3.622987 6.4509% 1972 3.690379 0.270975 4.7304% 1971 3.020417 0.331080 5.7132% 1970 0.146279 6.836249 5.5272% 1969 6.633284 0.150755 5.5714% 1968 0.479641 2.084891 5.0148% 1967 1.365019 0.732591 2.5719% 1966 0.554670 1.802873

extension