{"entity":{"iso2":"PT","iso3":"PRT","name":"Portugal","slug":"portugal"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"literate-and-illiterate-world-population","source":"UNESCO (1957) and other sources \u2013 with major processing by Our World in Data","source_url":"https://ourworldindata.org/grapher/literate-and-illiterate-world-population","title":"Literate and illiterate world population","unit":"%"},"observations":[{"date":"1900-01-01","value":73.4},{"date":"1911-01-01","value":68.9},{"date":"1920-01-01","value":65.2},{"date":"1930-01-01","value":60.2},{"date":"1940-01-01","value":50.4},{"date":"1950-01-01","value":42.5},{"date":"1981-01-01","value":20.56},{"date":"1991-01-01","value":12.05},{"date":"2011-01-01","value":5.52}],"summary":{"latest_period":"2011-01-01","latest_value":5.52,"max":73.4,"mean":44.3033,"min":5.52,"of":128,"rank":73,"trend":"volatile"}}