Seasons
Season 1
1 episodes · 1968
Season 2
3 episodes · 1969
Season 3
9 episodes · 1970
Season 4
12 episodes · 1971
Season 5
9 episodes · 1972
Season 6
11 episodes · 1973
Season 7
10 episodes · 1974
Season 8
9 episodes · 1975
Season 9
9 episodes · 1976
Season 10
13 episodes · 1977
- 11
Season 11
7 episodes · 1978
- 12
Season 12
4 episodes · 1979
- 13
Season 13
5 episodes · 1980
