qnli question: How many people are estimated to live in Tajikistan? sentence: Ҷумҳурии Тоҷикистон, Çumhuriji Toçikiston/Jumhuriyi Tojikiston; Russian: Респу́блика Таджикистан, Respublika Tadzhikistan), is a mountainous, landlocked country in Central Asia with an estimated 8 million people in 2013, and an area of 143,100 km2 (55,300 sq mi).