{"entity":{"iso2":"SL","iso3":"SLE","name":"Sierra Leone","slug":"sierra-leone"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"years-of-schooling-prados-de-la-escosura","source":"Leandro Prados de la Escosura (2021) \u2013 with minor processing by Our World in Data","source_url":"https://ourworldindata.org/grapher/years-of-schooling-prados-de-la-escosura","title":"Average years of schooling","unit":"years"},"observations":[{"date":"1870-01-01","value":0.11},{"date":"1880-01-01","value":0.16},{"date":"1890-01-01","value":0.21},{"date":"1900-01-01","value":0.27},{"date":"1913-01-01","value":0.28},{"date":"1925-01-01","value":0.266047},{"date":"1929-01-01","value":0.25},{"date":"1933-01-01","value":0.237414},{"date":"1938-01-01","value":0.26},{"date":"1950-01-01","value":0.38},{"date":"1955-01-01","value":0.596484},{"date":"1960-01-01","value":0.8},{"date":"1965-01-01","value":0.975},{"date":"1970-01-01","value":1.15},{"date":"1975-01-01","value":1.55179},{"date":"1980-01-01","value":2.01},{"date":"1985-01-01","value":2.47206},{"date":"1990-01-01","value":2.92},{"date":"1995-01-01","value":3.30862},{"date":"2000-01-01","value":3.63},{"date":"2005-01-01","value":3.5002},{"date":"2010-01-01","value":3.99},{"date":"2015-01-01","value":3.332},{"date":"2020-01-01","value":4.57608}],"summary":{"latest_period":"2020-01-01","latest_value":4.57608,"max":4.57608,"mean":1.55149,"min":0.11,"of":162,"rank":144,"trend":"volatile"}}