3.983001 0.251067 9.6843% 1980 5.424164 0.184360 9.0330% 1979 0.333059 3.002467 8.8650% 1978 5.597062 0.178665 7.2813% 1977 0.439012 2.277843 6.6558% 1976 1.802873 0.554670 6.4073% 1975 7.906295 0.126481 9.8159% 1974 7.714476 0.129626 9.0909% 1973 2.239810 0.446466 6.4509% 1972 6.118592 0.163436 4.7304% 1971 0.220096 4.543481 5.7132% 1970 1.647072 0.607138 5.5272% 1969 5.378369 0.185930 5.5714% 1968 0.131302 7.616025 5.0148% 1967 1.850460 0.540406 2.5719% 1966 1.483017 0.674301 3.5485% 1965 4.760532 0.210061 2.7360% 1964 2.473706 0.404252 1.5423% 1963 1.290868
hardens