Milan, January 18 - The Expo company earned 736.1 million euros in 2015, including 373.7 million from ticket sales, the company said Monday. Some 21,476,957 tickets were sold with an average take of 17.4 euros per ticket, it said after a board meeting. After initial slow sales and fears of fall-out from graft probes, the Expo Milan 2015 world's fair turned into a roaring success. Earnings from sponsorship totalled 223.9 million euros while earnings from other sources came to 138.5 million. Total management costs instead came to 721.2 million euros of which 311.2 million for the running of the six-month Universal Exposition, Expo Spa said.