{"entity":{"iso2":"RS","iso3":"SRB","name":"Serbia","slug":"serbia"},"indicator":{"licence":"CC BY 4.0 (World Bank Open Data)","slug":"pisa-15-year-olds-by-mathematics-proficiency-level-percent-level-4","source":"OECD Programme for International Student Assessment (PISA)","source_url":"https://data.worldbank.org/indicator/LO.PISA.MAT.4","title":"PISA: 15-year-olds by mathematics proficiency level (%). Level 4","unit":null},"observations":[{"date":"2003-01-01","value":8.11744},{"date":"2006-01-01","value":9.08509},{"date":"2009-01-01","value":9.48692},{"date":"2012-01-01","value":10.4768},{"date":"2018-01-01","value":11.7327}],"summary":{"latest_period":"2018-01-01","latest_value":11.7327,"max":11.7327,"mean":9.77979,"min":8.11744,"of":53,"rank":37,"trend":"rising"}}