| Year(s) | Country | % Correct |
|---|---|---|
| 1962, 1965 | Belgium | 100%
|
| 1966 | Italy | 100%
|
| 1962, 1963 | Netherlands | 100%
|
| 1962, 1965, 1983 | Spain | 100%
|
| 2003, 2021 | United Kingdom | 100%
|
| 1963, 1965, 1982 | Finland | 92%
|
| 1964, 1965, 2015 | Germany | 92%
|
| 1989 | Iceland | 92%
|
| 1970 | Luxembourg | 92%
|
| 1963, 1978, 1981, 1997 | Norway | 92%
|
| 1963 | Sweden | 92%
|
| 1962, 1988, 1991, 2015 | Austria | 85%
|
| 1964, 1997 | Portugal | 85%
|
| 1964, 1967, 1998 | Switzerland | 77%
|
| 1983, 1987 | Turkey | 77%
|
| 1994 | Lithuania | 69%
|
| 1966 | Monaco | 69%
|
| 1964 | Yugoslavia | 62%
|