with 9 episodes premiered on November 21, 1971

with 24 episodes premiered on September 13, 1972

with 24 episodes premiered on September 13, 1973

with 24 episodes premiered on September 12, 1974

with 24 episodes premiered on September 11, 1975

with 24 episodes premiered on September 23, 1976

with 22 episodes premiered on September 15, 1977

with 23 episodes premiered on September 21, 1978

with 23 episodes premiered on September 20, 1979

with 22 episodes premiered on November 20, 1980