I'm not sure this graph is reliable. It probably needs verification. But really, for someone, 0 days of vacation a year is the real number. And the interesting thing is that people with low salaries also work a lot without vacation days, as do entrepreneurs ( talking about small and medium-sized business owners). But it's silly to assume that the rest of the world works less. You can visit Asia, countries in Europe, Germany, and talk to ordinary people there. By the way, if you do visit Germany, I recommend using
https://www.dbauskunft.com/de/ for travel. So, ask how much these people work.1