with 7 episodes premiered on Invalid Date

with 24 episodes premiered on September 16, 1972

with 24 episodes premiered on September 15, 1973

with 24 episodes premiered on September 14, 1974

with 24 episodes premiered on September 13, 1975

with 24 episodes premiered on September 25, 1976

with 22 episodes premiered on September 24, 1977