By 2015, Mumbai (formerly called Bombay) is expected to have 22.6 million inhabitants, Delhi 20.9 million, Mexico City 20.6 million, and São Paulo 20 million.
Arvatakse, et aastaks 2015 on Mumbais (endises Bombays) 22,6 miljonit, Delhis 20,9 miljonit, Méxicos 20,6 miljonit ja São Paulos 20 miljonit elanikku.