METHOD­OL­OGY

The Africa Report - - TOP 500 AFRICAN COMPANIES -

This year, we sent our ques­tion­naire to more than 14,000 com­pa­nies active on the con­ti­nent. Af­ter cross-checks and ver­i­fi­ca­tion, we es­tab­lished a rank­ing of ap­prox­i­mately 1,500 com­pa­nies, which in­cludes re­sponses from pre­vi­ous years. The top-rank­ing 500 are pub­lished here. To al­low for com­par­i­son, we ap­ply the same rules to all our data: 1) All fi­nan­cial data must have a clearly de­fined source, gen­er­ally com­mu­ni­cated to us by the com­pa­nies them­selves, and must re­fer to the year 2017 (in some cases 2017/2018);

2) If pre­sented in the lo­cal cur­rency, we con­vert the data into US dol­lar amounts ac­cord­ing to the rate on 31 De­cem­ber 2017; 3) We in­clude all com­pa­nies that fall un­der the le­gal ju­ris­dic­tion of at least one of the 54 coun­tries in Africa, which is why a hold­ing com­pany and a sub­sidiary can both fea­ture in the list; and 4) Where we can­not ob­tain up-to-date fig­ures, we use those of the pre­vi­ous year (marked with an as­ter­isk and ital­ics). Af­ter two years of si­lence, a com­pany is struck off the rank­ings.

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