Seasons

Specials

January 1, 1970 | 3 Episodes

Season 1

September 9, 1977 | 17 Episodes

Season 2

September 8, 1978 | 12 Episodes

Season 3

September 14, 1979 | 12 Episodes

Season 4

October 3, 1980 | 8 Episodes

Season 5

September 11, 1981 | 7 Episodes

Season 6

January 7, 1983 | 9 Episodes

Season 7

January 1, 1970 | 9 Episodes

Season 8

December 7, 1984 | 8 Episodes

Season 9

September 6, 1985 | 8 Episodes

Season 10

September 13, 1986 | 9 Episodes

Season 11

April 2, 1988 | 2 Episodes

Season 12

September 13, 1992 | 1 Episodes

Season 13

January 1, 1970 | 1 Episodes

Season 17

November 5, 1994 | 8 Episodes

Season 18