{"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-1","source":"OECD Programme for International Student Assessment (PISA)","source_url":"https://data.worldbank.org/indicator/LO.PISA.MAT.1","title":"PISA: 15-year-olds by mathematics proficiency level (%). Level 1","unit":null},"observations":[{"date":"2003-01-01","value":24.4623},{"date":"2006-01-01","value":22.9909},{"date":"2009-01-01","value":22.9426},{"date":"2012-01-01","value":23.4108},{"date":"2018-01-01","value":21.6366}],"summary":{"latest_period":"2018-01-01","latest_value":21.6366,"max":24.4623,"mean":23.0887,"min":21.6366,"of":53,"rank":16,"trend":"falling"}}