Seasons
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Season 1
8 episodes
1976
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Season 2
3 episodes
1978
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Season 3
2 episodes
1979
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Season 4
2 episodes
1980
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Season 5
4 episodes
1981
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Season 6
7 episodes
1982
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Season 7
9 episodes
1983
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Season 8
4 episodes
1984
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Season 9
3 episodes
1986
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Season 10
3 episodes
1988
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Season 11
4 episodes
1989
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Season 12
4 episodes
1990
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Season 13
1 episodes
1991
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Season 14
1 episodes
1992
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Season 15
2 episodes
1994
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Season 16
2 episodes
2007
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Season 17
36 episodes
2008
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Season 18
41 episodes
2009
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Season 19
37 episodes
2010
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Season 20
15 episodes
2011