4% by population of course, which is what you meant, but I think 40% of the world by wealth. While I understand what you mean by saying there are new middle classes being created from the other 96%, it seems like, absent another even more catastrophic economic screwup than we put ourselves through 8 years ago, American domination of the world market isn't going anywhere any time soon.
Well, let's hope it does. Other people need to get rich too.
In terms of GDP, US is about 20-25% of the globe. It is pretty significant, but I won't go too far to say it has domination.
Well said. Domination isn't the right word; perhaps "importance to" rather than "domination of".