with 2 episodes premiered on January 15, 1972

with 11 episodes premiered on January 22, 1972

with 21 episodes premiered on September 16, 1972

with 22 episodes premiered on September 22, 1973

with 22 episodes premiered on September 14, 1974

with 22 episodes premiered on September 13, 1975

with 24 episodes premiered on September 25, 1976

with 6 episodes premiered on January 7, 1978