{"entity":{"iso2":"BG","iso3":"BGR","name":"Bulgaria","slug":"bulgaria"},"indicator":{"licence":"CC BY 4.0 (World Bank Open Data)","slug":"barro-lee-average-years-of-primary-schooling-age-35-39-total","source":"Robert J. Barro and Jong-Wha Lee: http://www.barrolee.com/","source_url":"https://data.worldbank.org/indicator/BAR.PRM.SCHL.3539","title":"Barro-Lee: Average years of primary schooling, age 35-39, total","unit":null},"observations":[{"date":"1960-01-01","value":6.09},{"date":"1965-01-01","value":6.1},{"date":"1970-01-01","value":3.41},{"date":"1975-01-01","value":3.82},{"date":"1980-01-01","value":3.86},{"date":"1985-01-01","value":3.91},{"date":"1990-01-01","value":7.74},{"date":"1995-01-01","value":7.8},{"date":"2000-01-01","value":7.83},{"date":"2005-01-01","value":7.84},{"date":"2010-01-01","value":3.93}],"summary":{"latest_period":"2010-01-01","latest_value":3.93,"max":7.84,"mean":5.66636,"min":3.41,"of":144,"rank":106,"trend":"rising"}}