Ukuchacha ngokukhawuleza koqoqosho lwaphesheya kwabangela imfuno emandla yentsimbi, kwaye umgaqo-mali wokunyusa amaxabiso emarike yentsimbi unyuke kakhulu.

Abanye abathathi-nxaxheba beemarike babonise ukuba amaxabiso ensimbi aye anyuka ngokuthe ngcembe ngenxa yeemfuno eziqinileyo zemarike yentsimbi yaphesheya kwikota yokuqala; ngoko ke, iiodolo zokuthunyelwa kwempahla kumazwe angaphandle kunye nomthamo wokuthunyelwa kwempahla kwamanye amazwe unyuke kakhulu kubalelwa kukuzimisela kwamashishini asekhaya ukuthumela ngaphandle.

Amaxabiso entsimbi anyuke kakhulu eYurophu nase-US, ngelixa ukunyuka bekusezantsi kakhulu e-Asia.

Iimarike zensimbi zaseYurophu naseMelika zaqhubeka zinyuka ukususela kwisiqingatha sesibini sonyaka odlulileyo. Ukuba kukho naluphi na utshintsho kuqoqosho, iimarike kwezinye iingingqi ziya kuchaphazeleka.