It's difficult to answer that as things are ever changing, ever improving, but it's probably less than half of the current global population. At the present, t

It's difficult to answer that as things are ever changing, ever improving, but it's probably less than half of the current global population. At the present, the press is usually talking about all of Earth's resources being used up around August each year. If everyone used the same amount of resources as the top 10% percent we'd probably end up with that point being passed much earlier.