| Date Joined | Member | % Correct |
|---|---|---|
| Founder | France | 100%
|
| Founder | Germany | 100%
|
| 1 May 2004 | Poland | 100%
|
| 1 January 1986 | Portugal | 97%
|
| 1 January 1995 | Austria | 94%
|
| Founder | Belgium | 94%
|
| 1 January 1973 | Denmark | 94%
|
| 1 May 2004 | Estonia | 94%
|
| 1 January 1973 | Ireland | 94%
|
| Founder | Italy | 94%
|
| 1 May 2004 | Lithuania | 94%
|
| Founder | Luxembourg | 94%
|
| 1 January 1986 | Spain | 94%
|
| 1 January 1995 | Sweden | 94%
|
| 1 January 1995 | Finland | 91%
|
| 1 May 2004 | Hungary | 91%
|
| 1 May 2004 | Latvia | 91%
|
| 1 January 2007 | Romania | 91%
|
| 1 July 2014 | Croatia | 89%
|
| 1 January 1981 | Greece | 89%
|
| 1 May 2004 | Slovakia | 89%
|
| 1 May 2004 | Slovenia | 89%
|
| 1 January 2007 | Bulgaria | 86%
|
| Founder | Netherlands | 86%
|
| 1 May 2004 | Czechia | 83%
|
| 1 May 2004 | Malta | 77%
|
| 1 May 2004 | Cyprus | 57%
|