There are currently (2013) 27 member countries:
- In 1957 Belgium, France, Germany, Italy, The Netherlands and Luxembourg were the 6 founder members of the European Economic Community, now known as the European Union.
- In 1973 Ireland, the United Kingdom and Denmark joined, bringing the total to 9.
- In 1981 Greece became the 10th country.
- In 1986 Portugal and Spain brought the total to 12.
- In 1995 Austria, Finland and Sweden became members.
- These 15 countries were joined by 10 others in 2004:
Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia and Slovenia.
- On 1st January, 2007 Bulgaria and Romania were the latest additions.
The member states of the European Union, animated in order of accession.