| Years Served | Answer | % Correct |
|---|---|---|
| 1966 - 1978 | Balthazar Johannes Vorster | 0%
|
| 1948 - 1954 | Daniël François Malan | 0%
|
| 1959 - 1966 | Hendrik Frensch Verwoerd | 0%
|
| 1924 - 1939 | James Barry Munnik Hertzog | 0%
|
| 1919 - 1924 | Jan Christiaan Smuts | 0%
|
| 1939 - 1948 | Jan Christiaan Smuts | 0%
|
| 1954 - 1958 | Johannes Gerhardus Strijdom | 0%
|
| 1910 - 1919 | Louis Botha | 0%
|
| 1978 - 1984 | Pieter Willem Botha | 0%
|