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
Sørkjosen Airport Sørkjosen Airport Sørkjosen Airport (; ) is a regional airport located at the village of Sørkjosen in Nordreisa Municipality in Troms county, Norway, about from the municipal center of Storslett. Owned and operated by the state-owned Avinor, it handled 15,198 passengers in 2014. The airport has a runway and is served by Widerøe, which operates regional routes using the Dash 8-100 to Tromsø and communities in Finnmark on public service obligation contracts. The airport opened in 1974 and was originally served using de Havilland Canada Twin Otter aircraft. Dash 8s were introduced in 1995 and two years later ownership was