Which African country contains the most primates?

After hours of research I made this map of all the primates. The more the colors, the more types of primates live there. Remember the colors are highly populated areas of the primate.

Yellow-Lemurs

Red-Humans

Grey-Old World Monkeys

Green-Gorillas

Blue-Chimpanzees

Pink-Bonobo

Nigeria is the highest populated country for humans...you can kind of guestimate which country you think.