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
March for Life (Paris) European countries other than France, notably Italy, Spain, Belgium, the UK, Poland, Switzerland, Germany and Ireland. 2010 saw a sharp rise in attendance, possibly as high as 25,000, compared to 15,000 in 2009. These numbers have since increased to 50,000 in 2017. March for Life (Paris) The Paris March for Life () is an annual demonstration protesting abortion held in Paris in late January, close to the anniversary date of the 1975 law that legalized abortion in France. The event was created in 2005 by several French pro-life organizations the thirtieth year of legal abortion which it is opposed to.