Season 1

September 17, 1972 | 24 Episodes

Season 2

September 15, 1973 | 24 Episodes

Season 3

September 10, 1974 | 24 Episodes

Season 4

September 12, 1975 | 24 Episodes

Season 5

September 21, 1976 | 24 Episodes

Season 6

September 20, 1977 | 24 Episodes

Season 7

September 18, 1978 | 25 Episodes

Season 8

September 17, 1979 | 25 Episodes

Season 9

November 17, 1980 | 20 Episodes

Season 10

October 26, 1981 | 21 Episodes

Season 11

October 25, 1982 | 16 Episodes