| Sovereign states | | European Union |
- Austria
- Belgium
- Bulgaria
- Croatia
- Cyprus
- Czech Republic
- Denmark
- Estonia
- Finland
- France
- Germany
- Greece
- Hungary
- Republic of Ireland
- Italy
- Latvia
- Lithuania
- Luxembourg
- Malta
- Netherlands
- Poland
- Portugal
- Romania
- Slovakia
- Slovenia
- Spain
- Sweden
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| Other |
- Albania
- Andorra
- Armenia
- Azerbaijan
- Belarus
- Bosnia and Herzegovina
- Georgia
- Iceland
- Kazakhstan
- Liechtenstein
- Moldova
- Monaco
- Montenegro
- North Macedonia
- Norway
- Russia
- San Marino
- Serbia
- Switzerland
- Turkey
- Ukraine
- United Kingdom
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