Seasons

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Season 1

3 Episodes

1972

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Season 2

6 Episodes

1973

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Season 3

13 Episodes

1974

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Season 4

14 Episodes

1975

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Season 5

13 Episodes

1976

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Season 6

14 Episodes

1977

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Season 7

12 Episodes

1978

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Season 8

13 Episodes

1979

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Season 9

12 Episodes

1980

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Season 10

14 Episodes

1981

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Season 11

12 Episodes

1982

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Season 12

13 Episodes

1983

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Season 13

13 Episodes

1984

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Season 14

13 Episodes

1985

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Season 15

13 Episodes

1986

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Season 16

10 Episodes

1987