| Last | Country | % Correct |
|---|---|---|
| - | Germany | 98%
|
| - | Finland | 97%
|
| - | Norway | 97%
|
| - | Poland | 97%
|
| - | Japan | 96%
|
| - | Russia | 96%
|
| 2014 | Sweden | 96%
|
| 2004 | United States of America | 96%
|
| - | Austria | 95%
|
| 2012 | Italy | 95%
|
| 2009 | Canada | 93%
|
| 2013 | Czech Republic | 91%
|
| 1998 | France | 91%
|
| - | Slovenia | 90%
|
| - | Switzerland | 90%
|
| 2017 | South Korea | 84%
|
| 1980 | Slovakia | 78%
|
| 2016 | Kazakhstan | 69%
|
| - | Romania | 69%
|
| 1984 | Bosnia and Herzegovina | 53%
|