Nigeria has retained its position as Africa’s fourth-wealthiest country by number of dollar millionaires, despite recording one of the continent’s steepest declines in high-net-worth individuals over the past decade. However, the report noted that the record represents a 47 percent decline in its millionaire population since 2015. AdvertisementSouth Africa sits atop the ranking, with 41,100 millionaires, 112 centi-millionaires and eight billionaires, followed by Egypt with 14,800 millionaires, 49 centi-millionaires, and seven billionaires. Mauritius takes the sixth position, with 4,800 millionaires, followed by Algeria (2,700), Ghana (2,600), Namibia (2,500) and Ethiopia (2,400) to complete the top 10 list. The report noted that several African countries, including Tunisia and the Democratic Republic of Congo, were excluded because of insufficient reliable data.