| Last | Country | % Correct |
|---|---|---|
| - | United States of America | 100%
|
| - | Austria | 98%
|
| - | Canada | 98%
|
| 2017 | France | 98%
|
| - | Germany | 96%
|
| 2013 | Norway | 96%
|
| 2011 | Sweden | 96%
|
| 2019 | China | 94%
|
| 2013 | Finland | 94%
|
| 2016 | Japan | 94%
|
| - | Russia | 94%
|
| - | Switzerland | 94%
|
| - | Italy | 92%
|
| - | Spain | 88%
|
| 2017 | South Korea | 86%
|
| 2011 | United Kingdom | 84%
|
| - | Czech Republic | 74%
|
| - | New Zealand | 72%
|
| 2012 | Slovakia | 72%
|
| - | Slovenia | 72%
|
| 2017 | Denmark (cancelled) | 70%
|
| 2017 | Argentina | 62%
|
| 2012 | Belgium | 62%
|
| 2011 | Netherlands | 62%
|
| 2014 | Andorra | 58%
|
| 2007 | Chile | 56%
|
| - | Turkey | 48%
|
| 2018 | Bulgaria | 46%
|