You’re kinda late, aren’t you Nigel?
I heard that the Netherlands are trying to reverse the trend by offering free transportation of their foreign laborers back to their home country.
Of course, Brussels, London, Rome, and Amsterdam turned out to offer more attractive lifestyles than downtown Kinshasa or the South Side of Ougadougou. The Dutch have been paying people for years to go TF home! That doesn't work, either.
Quaint and colorful foreigners all, they were wonderful on the Kodachrome pages of the National Geographic. Clogging the gutters of Europe? Not so hot.