{"entity":{"iso2":"BG","iso3":"BGR","name":"Bulgaria","slug":"bulgaria"},"indicator":{"licence":"CC BY 4.0 (World Bank Open Data)","slug":"pisa-distribution-of-mathematics-scores-50th-percentile-score","source":"OECD Programme for International Student Assessment (PISA)","source_url":"https://data.worldbank.org/indicator/LO.PISA.MAT.P50","title":"PISA: Distribution of Mathematics Scores: 50th Percentile Score","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":440.89},{"date":"2018-01-01","value":434.38}],"summary":{"latest_period":"2018-01-01","latest_value":434.38,"max":440.89,"mean":430.921,"min":413.449,"of":56,"rank":42,"trend":"flat"}}