Paris for 31 percent of the GDP of France. According to the Economist Intelligence Unit Worldwide Cost of Living Survey in 2018, Paris was the second-most expensive city in the world, behind Singapore and ahead of Zurich, Hong Kong, Oslo and Geneva. The city is a major rail, highway, and air-transport hub served by two international airports: Paris-Charles de Gaulle (the second busiest airport in Europe after London Heathrow Airport with 69.5 million passengers in 2017) and Paris-Orly. Opened in 1900, the city's subway system, the Paris Métro, serves 5.23 million passengers daily, and is the second busiest metro system in
Málaga Airport opened on 15 March 2010, and flight operations started on 16 March 2010. A second runway opened at the airport on 26 June 2012. Málaga Airport is the busiest international airport of Andalucía, accounting for 85 per cent of the region's non-domestic traffic. It offers a wide variety of international destinations. The airport, connected to the Costa del Sol, has a daily link with twenty cities in Spain and over one hundred cities in Europe. Direct flights also operate to Africa, the Middle East and also to North America in the summer season. Airlines with a base at the airport