Season 1
24 episodes · 1970
Season 2
49 episodes · 1971
Season 3
32 episodes · 1972
Season 4
34 episodes · 1973
Season 5
30 episodes · 1974
Season 6
9 episodes · 1975
Season 7
2 episodes · 1976
Season 8
14 episodes · 1991
Season 9
16 episodes · 1992
Season 10
23 episodes · 1993
Season 11
29 episodes · 1994
Season 12
22 episodes · 1995
Season 13
7 episodes · 1996