| Less than 20% | 20% - 40% | More than 40% |
2001 | Namibia, Botswana, Mozambique, South Africa, Angola, Seychelles, Madagascar, Swaziland (8 countries) | Algeria, Rwanda, Malawi Cape Verde, Ghana, Lesotho, Zambia, Gambia, Ethiopia, Liberia, Equatorial Guinea, Mauritius, Uganda, Mauritania, (14 countries) | Sao Tome and Principe, Niger, Kenya, Congo, Tanzania, Eritrea, Burundi, Guinea-Bissau, Benin, Comoros, Mali, Senegal, Chad, Gabon, Central African Republic, Burkina Faso, Nigeria, Togo, DRC, Cameroon, Côte d’Ivoire, Guinea, Sierra Leone (23 countries) |
2005 | Namibia, Seychelles, Botswana, Malawi, Mozambique, Swaziland, Rwanda, South Africa (8 countries) | Madagascar, Ghana, Gambia, Cape Verde, Angola, Algeria, Zambia, Ethiopia, Lesotho, Senegal, Liberia, Sao Tome and Principe, Mauritania, Equatorial Guinea, Tanzania, Burkina Faso, Comoros, Burundi (18 countries) | Congo, Mauritius, Kenya, Uganda, Niger, Benin, Guinea-Bissau, DRC, Mali, Eritrea, Chad, Gabon, Togo, Central African Republic, Nigeria, Cameroon, Sierra Leone, Côte d’Ivoire, Guinea (19 countries) |
2010 | Seychelles, Namibia, Botswana, Malawi, Tanzania, Mozambique, Swaziland, Lesotho, South Africa, Angola (10 Countries) | Algeria, Rwanda, Equatorial Guinea, Gambia, Cape Verde, Zambia, Ghana, Madagascar, Comoros, Senegal, Liberia, DRC, Burkina Faso, Ethiopia, Burundi (15 countries) | Niger, Kenya, Mauritania, Benin, Togo, Gabon, Uganda, Mauritius, Eritrea, Mali, Congo, Sao Tome and Principe, Nigeria, Central African Republic, Guinea-Bissau, Cameroon, Chad, Côte d’Ivoire, Sierra Leone, Guinea (20 countries) |