elevation regions are composed of hardy grasses and small flowering plants. Several regions are designated protected areas; there are three national parks: Band-e Amir, Wakhan and Nuristan. Afghanistan had a 2018 Forest Landscape Integrity Index mean score of 8.85/10, ranking it 15th globally out of 172 countries. Demographics The population of Afghanistan was estimated at 32.9 million as of 2019 by the Afghanistan Statistics and Information Authority, whereas the UN estimates over 38.0 million. In 1979 the total population was reported to be about 15.5 million. About 23.9% of them are urbanite, 71.4% live in rural areas, and the remaining 4.7% are nomadic. An additional 3 million or so Afghans are temporarily housed in neighboring Pakistan and Iran, most of whom were born and raised in those two countries. As of 2013, Afghanistan was the largest refugee-producing country in the world, a title held for 32 years. The current population growth rate is 2.37%, one of the highest in the world outside of Africa. This population is expected to reach 82 million by 2050 if current population trends continue. The population of Afghanistan increased steadily until the 1980s, when civil war caused millions to flee to other countries such as Pakistan. Millions have since returned and the war conditions contribute to the country having the highest fertility rate outside Africa. Afghanistan's healthcare has recovered since the turn of the century, causing falls in infant mortality and increases in life expectancy, although it has the lowest life expectance of any country outside Africa. This (along with other factors such as returning refugees) caused rapid population growth in the 2000s that has only recently started to slow down. The Gini coefficient in 2008 was 27.8. Ethnicity and languages Afghans are divided into several ethnolinguistic groups. Off of sociological research data by The Asia Foundation in 2019, the Pashtuns are the largest ethnic group, comprising 39%, followed by Tajiks, comprising 37%. of the country's population. The other two major ethnic groups are the Hazaras and Uzbeks. A further 10 other ethnic groups are recognized and each are represented in the Afghan National Anthem. Dari and Pashto are the official languages of Afghanistan; bilingualism is very common. Dari, which is a variety of and mutually intelligible with Persian (and very often called 'Farsi' by some Afghans like in Iran) functions as the lingua franca in Kabul as well as in much of the northern