{"entity":{"iso2":"BG","iso3":"BGR","name":"Bulgaria","slug":"bulgaria"},"indicator":{"licence":"CC BY 4.0 (World Bank Open Data)","slug":"pisa-male-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.MA","title":"PISA: Male 15-year-olds by mathematics proficiency level (%). Level 1","unit":null},"observations":[{"date":"2006-01-01","value":23.9656},{"date":"2009-01-01","value":22.7096},{"date":"2012-01-01","value":23.7294},{"date":"2015-01-01","value":21.3209},{"date":"2018-01-01","value":22.2112}],"summary":{"latest_period":"2018-01-01","latest_value":22.2112,"max":23.9656,"mean":22.7874,"min":21.3209,"of":53,"rank":13,"trend":"falling"}}