Austria (1995)
Belgium (1952)
Bulgaria (2007)
Cyprus (2004)
Czech Republic (2004)
Denmark (1973)
Estonia (2004)
Finland (1995)
France (1952)
Germany (1952)
Greece (1981)
Hungary (2004)
Ireland (1973)
Italy (1952)
Latvia (2004)
Lithuania (2004)
Luxembourg (1952)
Malta (2004)
Netherlands (1952)
Poland (2004)
Portugal (1986)
Romania (2007)
Slovakia (2004)
Slovenia (2004)
Spain (1986)
Sweden (1995)
United Kingdom (1973)
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