Season
- Season 21 1986-02-22
- Season 20 1985-01-05
- Season 19 1984-05-19
- Season 18 1983-07-08
- Season 17 1982-01-15
- Season 16 1981-01-16
- Season 15 1980-01-11
- Season 14 1979-01-12
- Season 13 1978-01-06
- Season 12 1977-01-01
- Season 11 1976-01-02
- Season 10 1975-01-13
- Season 9 1974-01-05
- Season 8 1973-01-05
- Season 7 1972-01-10
- Season 6 1971-01-14
- Season 5 1970-01-09
- Season 4 1969-01-03
- Season 3 1968-03-07
- Season 2 1967-01-13
- Season 1 1966-07-21
