with 39 episodes premiered on September 30, 1951

with 39 episodes premiered on September 28, 1952

with 39 episodes premiered on September 22, 1953

with 39 episodes premiered on September 21, 1954

with 37 episodes premiered on September 26, 1955

with 36 episodes premiered on October 2, 1956

with 35 episodes premiered on October 1, 1957

with 31 episodes premiered on September 30, 1958

with 32 episodes premiered on September 29, 1959

with 35 episodes premiered on September 27, 1960

with 34 episodes premiered on September 26, 1961

with 32 episodes premiered on September 25, 1962

with 32 episodes premiered on September 24, 1963

with 32 episodes premiered on September 22, 1964

with 32 episodes premiered on September 14, 1965

with 32 episodes premiered on September 13, 1966

with 31 episodes premiered on September 5, 1967

with 31 episodes premiered on September 24, 1968

with 29 episodes premiered on September 23, 1969

with 25 episodes premiered on September 14, 1970