List of Countries - European Union (EU) 2007
Summary of changes
On January 1st, 2007, addition of two new members: Bulgaria and Romania.
On May 1st, 2004, addition of 10 new members: Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, and Slovenia.
Source: European Union. Countries. http://europa.eu/about-eu/countries/index_en.htm (accessed: December 7, 2012).