Timeline

Year Country

1957 Belgium, France, Italy, Luxembourg, the Netherlands and West Germany

1973 Denmark, Ireland and United Kingdom

1981 Greece

1986 Portugal and Spain

1990 East Germany reunites with West Germany to create Germany

1995 Finland, Austria and Sweden

2004 Cyprus, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovenia, Slovakia and Czechia

2007 Bulgaria and Romania

2013 Croatia

2020 United Kingdom (Withdraws from the EU)

2028 Montenegro

2029 North Macedonia

2030 Scotland, Wales

2034 Albania

2035 Ukraine, Moldova

2037 Kosovo

2040 Georgia

2048 Catalonia, Basque Country