Plovdiv is the economic capital of Bulgaria as it has the country's largest economy and contributes 7.5% of Bulgaria's GDP . In 2014, more than 35 thousand companies operate in the region which create jobs for 285,000 people. The advantages of Plovdiv include the central geographic location, good infrastructure, and large population. Plovdiv has an international airport, terminal for intermodal transport, several connections with Trakia motorway (connecting Sofia and Burgas), proximity to Maritsa motorway (the main corridor to Turkey), and well-developed road and rail infrastructure which all led to the development of the city as the leading city in terms of industrial output in Bulgaria.