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
Wakkanai Airport Wakkanai Airport Wakkanai is the northernmost airport in Japan which is capable of handling jet aircraft; due to its small size, it is susceptible to closures during the coldest winter months, in which case incoming aircraft are often diverted to Asahikawa Airport. It has one jet bridge, one apron gate for mid-sized jet aircraft, and two apron gates for commuter aircraft. Wakkanai Airport opened to passenger traffic in 1960, initially on an irregular basis. Air Nippon began scheduled service to Okadama Airport and Rishiri Airport in 1974, followed by Rebun Airport in 1978 and New Chitose Airport in 1980. Air