How much does bounce rate vary according to page load speed?

When a user loads a page by clicking on a link or image they may stay and read the content or they may "bounce" (leave).

Presuming fewer people stick around the longer the page takes to load, are there any canonical statistics or available studies on how much the bounce rate increases with page load time?

For example, if a page loads in 5 seconds perhaps 80% of people don't bounce. But if the page load takes 7 seconds, perhaps only 75% stay, and if it takes 12+ seconds, perhaps 60% stay.

I know this would vary a lot according to the website/page/users, but I would be interested in any canonical statistics or 'headline' figures that can be used in approximations; that is, knowing something (e.g. figures for websites we may know or be able to relate to) is better than not knowing at all.