Season
- Season 17 1982-05-28
- Season 16 1981-05-29
- Season 15 1980-05-09
- Season 14 1979-05-11
- Season 13 1978-04-21
- Season 12 1977-04-22
- Season 11 1976-05-21
- Season 10 1975-05-23
- Season 9 1974-05-03
- Season 8 1973-05-18
- Season 7 1972-05-19
- Season 6 1971-04-21
- Season 5 1970-04-30
- Season 4 1969-05-14
- Season 3 1968-05-12
- Season 2 1967-05-14
- Season 1 1966-08-07
- Season 0 1970-12-26
