| Year | Debater | Record | Result |
|---|---|---|---|
| 1974 | Unknown | Did Not Clear | |
| 1970 | 3-7 | 20th Place | |
| 1968 | 4-6 | 17th Place | |
| 1967 | 7-3 | 7th Place | |
| 1966 | 3-7 | 20th Place | |
| 1965 | 8-2 | 2nd Place | |
| 1964 | 4-6 | 15th Place | |
| 1963 | 3-7 | 19th Place | |
| 1962 | 8-2 | 3rd Place | |
| 1961 | 6-4 | 8th Place | |
| 1960 | 1-5 | 14th Place | |
| 1959 | 3-3 | 12nd Place | |
| 1955 | Unknown | Unknown |