| Joined | Country | % Correct |
|---|---|---|
| Founder | Canada | 100%
|
| 2009 | Croatia | 100%
|
| Founder | Denmark | 100%
|
| 2023 | Finland | 100%
|
| Founder | France | 100%
|
| 1955 | Germany | 100%
|
| 1952 | Greece | 100%
|
| Founder | Iceland | 100%
|
| Founder | Italy | 100%
|
| Founder | Norway | 100%
|
| Founder | Portugal | 100%
|
| 2004 | Romania | 100%
|
| 1982 | Spain | 100%
|
| 2024 | Sweden | 100%
|
| 1952 | Turkey | 100%
|
| Founder | United Kingdom | 100%
|
| Founder | United States | 100%
|
| 2009 | Albania | 97%
|
| Founder | Belgium | 97%
|
| 2004 | Bulgaria | 97%
|
| 2004 | Estonia | 97%
|
| 2004 | Latvia | 97%
|
| 2004 | Lithuania | 97%
|
| Founder | Netherlands | 97%
|
| 1999 | Poland | 97%
|
| 2004 | Slovakia | 97%
|
| 2004 | Slovenia | 97%
|
| 1999 | Czech Republic | 94%
|
| 1999 | Hungary | 91%
|
| Founder | Luxembourg | 91%
|
| 2017 | Montenegro | 82%
|
| 2020 | North Macedonia | 82%
|