Americas. Sub-Saharan African countries top the list of countries and territories by fertility rate with 40 of the highest 50, all with TFR greater than 4 in 2008. All are above the world average except South Africa and Seychelles. More than 40% of the population in sub-Saharan countries is younger than 15 years old, as well as in Sudan, with the exception of South Africa. GDP per Capita (PPP) (2016, 2017 (PPP, US$)), Life (Exp.) (Life Expectancy 2006), Literacy (Male/Female 2006), Trans (Transparency 2009), HDI (Human Development Index), EODBR (Ease of Doing Business Rank June 2008 through May 2009), SAB (Starting a Business June 2008 through May 2009), PFI (Press Freedom Index 2009) Languages and ethnic groups Sub-Saharan Africa contains over 1,500 languages. Afroasiatic With the exception of the extinct Sumerian (a language isolate) of Mesopotamia, Afroasiatic has the oldest documented history of any language family in the world. Egyptian was recorded as early as 3200 BCE. The Semitic branch was recorded as early as 2900 BCE in the form of the Akkadian language of Mesopotamia (Assyria and Babylonia) and circa 2500 BCE in the form of the Eblaite language of north eastern Syria. The distribution of the Afroasiatic languages within Africa is principally concentrated in North Africa and the Horn of Africa. Languages belonging to the family's Berber branch are mainly spoken in the north, with its speech area extending into the Sahel (northern Mauritania, northern Mali, northern Niger). The Cushitic branch of Afroasiatic is centered in the Horn, and is also spoken in the Nile Valley and parts of the African Great Lakes region. Additionally, the Semitic branch of the family, in the form of Arabic, is widely spoken in the parts of Africa that are within the Arab world. South Semitic languages are also spoken in parts of the Horn of Africa (Ethiopia, Eritrea). The Chadic branch is distributed in Central and West Africa. Hausa, its most widely spoken language, serves as a lingua franca in West Africa (Niger, Ghana, Togo, Benin, Cameroon, and Chad). Khoisan The several families lumped under the term Khoi-San include languages indigenous to Southern Africa and Tanzania, though some, such as the Khoi languages, appear to have moved to their current locations not long before the Bantu expansion. In Southern Africa, their speakers are the Khoikhoi and San (Bushmen), in Southeast Africa, the Sandawe and Hadza. Niger–Congo The Niger–Congo family is the