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Andrus Ansip served two terms as Prime Minister of Estonia. His first term began in 2005 and ended in 2009, while his second term lasted from 2009 to 2014. During his time in office, Ansip implemented a number of economic reforms, including a flat income tax and a simplified business registration process. He also oversaw Estonia's accession to the European Union in 2004 and the eurozone in 2011.