{"entity":{"iso2":"BG","iso3":"BGR","name":"Bulgaria","slug":"bulgaria"},"indicator":{"licence":"CC BY 4.0 (World Bank Open Data)","slug":"pisa-mean-performance-on-the-mathematics-scale","source":"OECD Programme for International Student Assessment (PISA)","source_url":"https://data.worldbank.org/indicator/LO.PISA.MAT","title":"PISA: Mean performance on the mathematics scale","unit":null},"observations":[{"date":"2000-01-01","value":430.0},{"date":"2006-01-01","value":413.449},{"date":"2009-01-01","value":428.066},{"date":"2012-01-01","value":438.738},{"date":"2015-01-01","value":441.19},{"date":"2018-01-01","value":436.041}],"summary":{"latest_period":"2018-01-01","latest_value":436.041,"max":441.19,"mean":431.247,"min":413.449,"of":56,"rank":42,"trend":"flat"}}