{"entity":{"iso2":"ES","iso3":"ESP","name":"Spain","slug":"spain"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"ipv1-number-unvaccinated","source":"WHO & UNICEF (2025); UN, World Population Prospects (2024) \u2013 processed by Our World in Data","source_url":"https://ourworldindata.org/grapher/ipv1-number-unvaccinated","title":"Number of one-year-olds who have not received the inactivated polio vaccine","unit":"one-year-olds"},"observations":[{"date":"2015-01-01","value":4248.69},{"date":"2016-01-01","value":4237.39},{"date":"2017-01-01","value":8353.66},{"date":"2018-01-01","value":8115.14},{"date":"2019-01-01","value":7730.76},{"date":"2020-01-01","value":7430.1},{"date":"2021-01-01","value":14222.2},{"date":"2022-01-01","value":6876.26},{"date":"2023-01-01","value":10283.5}],"summary":{"latest_period":"2023-01-01","latest_value":10283.5,"max":14222.2,"mean":7944.2,"min":4237.39,"of":194,"rank":91,"trend":"rising"}}