Transition economy to the IMF, Iran is in transition to a market economy, demonstrating early stages of a transition economy. The eight first-wave accession countries, which joined the European Union on 1 May 2004 (Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia) and the two second-wave accession countries that joined on 1 January 2007 (Romania and Bulgaria) have completed the transition process. According to the World Bank, "the transition is over" for the 10 countries that joined the EU in 2004 and 2007. It can be also understood as all countries of the Eastern Bloc. "Transition economics" is a special branch
Opinion polling for the United Kingdom European Union membership referendum to renegotiated terms or whether they thought the UK should leave if they do not like their current terms of membership. Newer countries to the European Union, countries which have joined the Union since 2004, were the biggest supporters: 52% supported the renegotiated position, compared to just 40% of respondents from EU members who joined before 2004. An ICM online poll of 1,000 adults in each of nine European countries in November 2015 found an average of 53% in favour of the UK's remaining in the EU. Following the EU referendum, there have been numerous opinion polls on the question