| Year | Continent | Country | % Correct |
|---|---|---|---|
| 1959 | North America | United States of America | 96%
|
| 1967 | Europe | United Kingdom | 95%
|
| 1969 | North America | Canada | 92%
|
| 1935 | Europe | Germany | 88%
|
| 1976 | Europe | West Germany | 88%
|
| 1948 | Asia | Japan | 85%
|
| 1975 | Europe | France | 84%
|
| 1979 | Asia | China | 83%
|
| 1938 | Europe | Sweden | 83%
|
| 1931 | North America | Mexico | 81%
|
| 1978 | Europe | Italy | 77%
|
| 1980 | Europe | the Netherlands | 76%
|
| 1977 | Oceania | New Zealand | 72%
|
| 1975 | Europe | Austria | 69%
|
| 1920 | Asia/ Europe | Soviet Union | 68%
|
| 1935 | Europe | Iceland | 65%
|
| 2007 | Europe | Portugal | 65%
|
| 1997 | Africa | South Africa | 65%
|
| 1932 | Europe | Poland | 64%
|
| 1971 | Asia | India | 61%
|
| 1978 | Europe | Luxembourg | 58%
|
| 1966 | Europe | Romania | 57%
|