Its pretty old-- i saw it over ten years ago-- so some of the data might be out of date--

and i suspected it even then-- US is rich but Europe has wealth too, as do other "1st world" countries--and being a femanist--I suspect the 6 richest people (what ever their nationality) are all still male.
It was put out by one of the "green groups"-- to shame american into using less (part of the less is more philosophy)