Members
as of 31 March 2025
| Germany | 944 |
| Italy | 438 |
| United Kingdom | 361 |
| France | 308 |
| Spain | 286 |
| Switzerland | 273 |
| Poland | 241 |
| The Netherlands | 200 |
| Sweden | 177 |
| Denmark | 175 |
| Greece | 166 |
| Austria | 135 |
| Ukraine | 129 |
| Norway | 112 |
| Belgium | 104 |
| Finland | 103 |
| Czech Republic | 100 |
| Romania | 99 |
| Turkey | 93 |
| Hungary | 80 |
| Israel | 78 |
| Russian Federation | 77 |
| Ireland | 74 |
| Iceland | 70 |
| Serbia | 69 |
| Croatia | 62 |
| Bulgaria | 61 |
| Slovenia | 58 |
| Lithuania | 48 |
| Slovakia | 40 |
| Portugal | 39 |
| Estonia | 32 |
| Luxembourg | 31 |
| Bosnia and Herzegovina | 29 |
| Cyprus | 27 |
| Latvia | 25 |
| Georgia | 24 |
| Kosovo | 24 |
| North Macedonia | 19 |
| Azerbaijan | 18 |
| United States | 15 |
| Montenegro | 13 |
| Albania | 11 |
| Greenland | 10 |
| Armenia | 9 |
| Malta | 8 |
| Belarus | 6 |
| Moldova | 5 |
| Palestinian Territories | 5 |
| Kazakhstan | 3 |
| Australia | 2 |
| Andorra | 1 |
| Kyrgyzstan | 1 |
| Canada | 1 |
| Hong Kong | 1 |
| Mexico | 1 |