1950-1960
1971
late 1970s and 1980s
1948
1955
1950-1959
1951
circa 1960-1970
1957
1962
circa 1960
1963
1973-1983
1958
1979
1955-1965
circa 1953
1984; 1983
circa 1983
1983
1948-1975
1950
1960
1964
1947
circa 1950
1965
1975
1968-1985