Can someone help translate the following for a friend. I have explained other parts but cant do this bit 100%

"the black and asian population of britain is only 6% of the total population, and over half of these were born in britain - they are not immigrants"

Many Thanks

 "the black and asian population of britain is only 6% of the total population,

Britanya´nın Siyah ve Asyalı nüfusu toplam nüfusun sadece 6% ´sını oluşturur,

 and over half of these were born in britain - they are not immigrants

ve bunun yarıdan fazlası Britanya´da doğmuş olup göçmen değildirler.