The Euro area is the area comprising those [European Union] Member States in which the euro has been adopted as the single currency in accordance with the Treaty and in which a single monetary policy is conducted under the responsibility of the ECB's Leadership Council. In 2000, the euro area included: Austria, Belgium, Finland, France, Germany, Ireland, Italy, Luxembourg, Netherlands, Portugal and Spain. Greece joined the euro area on January 1, 2001. Slovenia joined the euro area on 1 January 2007