Seasons

Specials

December 28, 1996 | 4 Episodes

Season 1

January 12, 1972 | 9 Episodes

Season 2

September 20, 1972 | 11 Episodes

Season 3

September 12, 1973 | 12 Episodes

Season 4

September 18, 1974 | 11 Episodes

Season 5

September 25, 1975 | 12 Episodes

Season 6

September 30, 1976 | 9 Episodes

Season 7

September 29, 1977 | 12 Episodes

Season 8

September 28, 1978 | 10 Episodes

Season 9

September 27, 1979 | 12 Episodes

Season 10

September 25, 1980 | 12 Episodes

Season 11

September 24, 1981 | 10 Episodes

Season 12

September 20, 1982 | 12 Episodes

Season 13

September 19, 1983 | 12 Episodes

Season 14

September 17, 1984 | 12 Episodes

Season 15

September 8, 1985 | 14 Episodes

Season 16

September 24, 1986 | 10 Episodes

Season 17

September 9, 1987 | 9 Episodes

Season 18

October 24, 1988 | 8 Episodes

Season 19

September 25, 1989 | 4 Episodes

Season 20

December 20, 2018 | 8 Episodes