{"entity":{"iso2":"SV","iso3":"SLV","name":"El Salvador","slug":"el-salvador"},"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":1.46},{"date":"1965-01-01","value":1.59},{"date":"1970-01-01","value":1.86},{"date":"1975-01-01","value":2.46},{"date":"1980-01-01","value":2.58},{"date":"1985-01-01","value":3.14},{"date":"1990-01-01","value":3.24},{"date":"1995-01-01","value":3.37},{"date":"2000-01-01","value":4.0},{"date":"2005-01-01","value":6.58},{"date":"2010-01-01","value":7.07}],"summary":{"latest_period":"2010-01-01","latest_value":7.07,"max":7.07,"mean":3.39545,"min":1.46,"of":144,"rank":13,"trend":"volatile"}}