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In page Dubai International Airport:

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Extensive upgrading work on existing retail areas since 2004 in Terminals 1 and 2 has increased sales. Dubai Duty Free Company announced annual sales of Dhs5.9 billion (US$1.6 billion) in 2012, representing a 10 per cent increase on the previous year. In 2008, Dubai Duty Free doubled its retail space from 7,000 to 15,000 m2 (75,000 to 161,000 sq ft) with the inauguration of the new Emirates Terminal 3 in October 2008. Dubai Duty Free recorded more than 23.5 million transactions in 2012.[1] As of August 2009, Dubai Duty Free was the biggest single airport retail operation in the world ahead of London's Heathrow and Seoul's Incheon airports.[citation needed]