In Sweden, 46 incidents of rape are reported per 100,000 residents.
That's not a large number. I'm sure the number which are unreported must be much higher. I don't think you can conclude much from studies of reported rapes, because the fraction which are reported is so small, and varies from country to country. You are much better off looking at surveys which ask people whether they have been the victim of a violent crime in the last year, and if so which one.