{"entity":{"iso2":"TO","iso3":"TON","name":"Tonga","slug":"tonga"},"indicator":{"licence":"CC BY 4.0 (World Bank Open Data)","slug":"barro-lee-average-years-of-total-schooling-age-75-total","source":"Robert J. Barro and Jong-Wha Lee: http://www.barrolee.com/","source_url":"https://data.worldbank.org/indicator/BAR.SCHL.75UP","title":"Barro-Lee: Average years of total schooling, age 75+, total","unit":null},"observations":[{"date":"1960-01-01","value":4.42},{"date":"1965-01-01","value":4.59},{"date":"1970-01-01","value":6.15},{"date":"1975-01-01","value":6.31},{"date":"1980-01-01","value":6.46},{"date":"1985-01-01","value":6.65},{"date":"1990-01-01","value":8.05},{"date":"1995-01-01","value":9.58},{"date":"2000-01-01","value":7.51},{"date":"2005-01-01","value":6.51},{"date":"2010-01-01","value":7.8}],"summary":{"latest_period":"2010-01-01","latest_value":7.8,"max":9.58,"mean":6.73,"min":4.42,"of":144,"rank":31,"trend":"rising"}}