{"entity":{"iso2":"BG","iso3":"BGR","name":"Bulgaria","slug":"bulgaria"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"pisa-mean-performance-on-the-mathematics-scale-by-sex","source":"OECD (2023) \u2013 with minor processing by Our World in Data","source_url":"https://ourworldindata.org/grapher/pisa-mean-performance-on-the-mathematics-scale-by-sex","title":"Average performance of 15-year-old girls and boys in mathematics","unit":"score"},"observations":[{"date":"2006-01-01","value":415.375},{"date":"2009-01-01","value":430.014},{"date":"2012-01-01","value":440.013},{"date":"2015-01-01","value":442.163},{"date":"2018-01-01","value":436.904},{"date":"2022-01-01","value":420.325}],"summary":{"latest_period":"2022-01-01","latest_value":420.325,"max":442.163,"mean":430.799,"min":415.375,"of":57,"rank":43,"trend":"flat"}}