Like a lot of things it's probably a heavily-skewed distribution. For a large number of europeans it could be a half dozen from holidays alone. For businesspe

Like a lot of things it's probably a heavily-skewed distribution. For a large number of europeans it could be a half dozen from holidays alone. For businesspeople in Europe it could easily be dozens of trips per year. But there's probably huge swaths of the population who have never traveled internationally for economic reasons, or because they live in a large country (like China, the US, India or Russia) which makes that less necessary.