 Another 2015 World Bank study measured the total turnover of registered companies in the country, as reported to the Rwanda Revenue Authority, and found that 92% of these were from the city of Kigali.However, the authors noted that this figure excluded turnover from small-scale farming, and was also inflated for companies headquartered in Kigali with revenue generated elsewhere in Rwanda.Official statistics classify economic activity as either "farm" or "non-farm", and Kigali accounts for 39% of non‐farm waged employees in the country.