Sierra Leone Sierra Leona SEARCH ENGINES - MOTEURS DE RECHERCHE - MOTORES DE BUSQÚEDA - SUCHMASCHINEN I I I X I I I BELT AND ROAD I I I X I I I REPUBLIC OF SIERRA LEONE > African Union Population - 1900: 1,157,000 - 1950: 2,087,000 - 2000: 4,148,000 - 2026: 9,540,000 Gross National Income Per Capita (2021) - 470 Euro / 510 US Dollars per year Sierra Leone borders: Liberia .. Guinea