National average IQ vs. lifetime net fiscal contribution per migrant (Dutch data):
The only significant net-positive contributors were Northern Europeans, North Americans, and the Japanese.
Every non-White ethnic group made a net-negative contribution, excluding the Israelis and "Four Asian Tigers" (Hong Kong, South Korea, Taiwan, and Singapore), who made a minor net-positive contribution, and the aforementioned Japanese.
There are some skewed considerations since this is the Netherlands, who basically speak very good english and fully embrace dutch speakers (which is why belgians, UK, Irish and americans are so welcome).
Plus, Germans, Austrians and Swiss have little to no reason to immigrate to it, since it's the same culture with a different language.
The rest is pretty spot on.
