The economic and social contributions of the sector have been considerable. A 2013 study conducted by Oxford Economics revealed that aviation supported 416,500 jobs, or 21% of Dubai employment, and a turnover of $26.7 billion, which equated to 27% of Dubai GDP. In 2013, passengers could connect from DXB to 25 cities with populations of over 10 million people. DXB had direct passenger flight connections to 149 cities with populations of over 1 million. Those totals have grown since, with DXB now serving more than 240 destinations on six continents.