relay network; 190,000 telephones; broadcast stations - 7

1970 6.000216 0.166661 5.5272% 1969 0.197296 5.068530 5.5714% 1968 0.236468 4.228908 5.0148% 1967 4.544308 0.220056 2.5719% 1966 0.315595 3.168618 3.5485% 1965 4.630293 0.215969 2.7360% 1964 3.870620 0.258357 1.5423% 1963 0.378065 2.645046 1.5697% 1962 0.253172 3.949884 2.2421% 1961 2.476126 0.403857 0.9709% 1960 0.245239 4.077655 1.6441% 1959 0.241272 4.144700 2.3579% 1958 4.124768 0.242438 2.0623% 1957 2.221323 0.450182 3.5571% 1956 3.797279 0.263346 3.3098% 1955 1.721544 0.580874 3.4226% 1954 1.801407 0.555122 1.5421% 1953 0.436767 2.289552 1.5703% 1952

probating