All Available Season All Season Season 1 Mar, 1979 9 episodes 6.2 Season 2 Mar, 1980 16 episodes 6.1 Season 3 Aug, 1980 9 episodes 6.7 Season 4 Apr, 1981 17 episodes 6.0 Season 5 Apr, 1982 18 episodes 5.9 Season 6 Apr, 1983 14 episodes 5.8 Season 7 May, 1984 15 episodes 5.5 Season 8 Mar, 1985 4 episodes 6.5 Season 9 Dec, 1987 10 episodes 6.1
