The classification has now been extended to cover the whole of Africa (except for Sao Tome and Principe, and Seychelles, which each have population < 250,000). This means a total of 52 countries, of which six – Algeria, Egypt, Libya, Morocco, Sudan and Tunisia – are also included in the MENA (Middle East and North Africa) category, and three – Egypt, Morocco and South Africa – are also included in the emerging economy group. There are also two currency areas, the west and central African CFA franc zones. This makes a total of 154 countries (and/or currency areas) now classified.