About 68% of this area is in Asia, 17% in the Americas, 9% in Europe, 5% in Africa and 1% in Oceania.
Zwine zwa swika 76% ya maafukhada aya bveledziwa America, ha vha na 11% ine ya bveledziwa Afurika, 9% Asia na 2% Europe na kha manwe mashango a vhukovhela.