| Letter | Years | Answer | % Correct |
|---|---|---|---|
| F | 82.6 | France | 100%
|
| G | 81.5 | Germany | 96%
|
| J | 84.8 | Japan | 96%
|
| N | 82.6 | Norway | 93%
|
| O | 76.9 | Oman | 93%
|
| Q | 79.8 | Qatar | 93%
|
| C | 83.8 | Canada | 89%
|
| D | 81.7 | Denmark | 89%
|
| H | 77.2 | Hungary | 89%
|
| I | 83.6 | Iceland | 89%
|
| U | 81.9 | United Kingdom | 89%
|
| Y | 67.5 | Yemen | 89%
|
| B | 81.9 | Belgium | 85%
|
| M | 89.5 | Monaco | 85%
|
| Z | 66.3 | Zambia | 85%
|
| A | 83.4 | Andorra | 81%
|
| L | 83.0 | Luxembourg | 81%
|
| V | 75.5 | Vietnam | 81%
|
| R | 75.8 | Romania | 74%
|
| S | 86.4 | Singapore | 74%
|
| P | 81.5 | Portugal | 70%
|
| T | 81.2 | Taiwan | 59%
|
| K | 79.1 | Kuwait | 56%
|
| E | 78.0 | Ecuador | 52%
|