{"entity":{"iso2":"ST","iso3":"STP","name":"Sao Tome and Principe","slug":"sao-tome-and-principe"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"polio-number-unvaccinated","source":"WHO & UNICEF (2025); UN, World Population Prospects (2024) \u2013 processed by Our World in Data","source_url":"https://ourworldindata.org/grapher/polio-number-unvaccinated","title":"Number of one-year-olds who are not vaccinated against polio","unit":"one-year-olds"},"observations":[{"date":"1981-01-01","value":1878.24},{"date":"1982-01-01","value":1905.28},{"date":"1983-01-01","value":1929.72},{"date":"1984-01-01","value":1959.88},{"date":"1985-01-01","value":1997.32},{"date":"1986-01-01","value":1334.84},{"date":"1987-01-01","value":1127.56},{"date":"1988-01-01","value":1160.88},{"date":"1989-01-01","value":1619.94},{"date":"1990-01-01","value":437.0},{"date":"1991-01-01","value":577.59},{"date":"1992-01-01","value":1491.27},{"date":"1993-01-01","value":1831.6},{"date":"1994-01-01","value":1419.8},{"date":"1995-01-01","value":958.86},{"date":"1996-01-01","value":1457.92},{"date":"1997-01-01","value":1229.85},{"date":"1998-01-01","value":1270.36},{"date":"1999-01-01","value":901.0},{"date":"2000-01-01","value":581.88},{"date":"2001-01-01","value":450.6},{"date":"2002-01-01","value":396.0},{"date":"2003-01-01","value":324.84},{"date":"2004-01-01","value":55.08},{"date":"2005-01-01","value":167.55},{"date":"2006-01-01","value":170.64},{"date":"2007-01-01","value":116.14},{"date":"2008-01-01","value":59.16},{"date":"2009-01-01","value":59.76},{"date":"2010-01-01","value":119.36},{"date":"2011-01-01","value":235.64},{"date":"2012-01-01","value":232.24},{"date":"2013-01-01","value":182.64},{"date":"2014-01-01","value":318.7},{"date":"2015-01-01","value":252.52},{"date":"2016-01-01","value":248.76},{"date":"2017-01-01","value":304.5},{"date":"2018-01-01","value":297.95},{"date":"2019-01-01","value":293.9},{"date":"2020-01-01","value":357.6},{"date":"2021-01-01","value":423.5},{"date":"2022-01-01","value":672.87},{"date":"2023-01-01","value":937.65}],"summary":{"latest_period":"2023-01-01","latest_value":937.65,"max":1997.32,"mean":784.846,"min":55.08,"of":194,"rank":149,"trend":"volatile"}}