{"entity":{"iso2":"WS","iso3":"WSM","name":"Samoa","slug":"samoa"},"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":"1980-01-01","value":3718.98},{"date":"1981-01-01","value":1785.68},{"date":"1982-01-01","value":683.93},{"date":"1983-01-01","value":577.5},{"date":"1984-01-01","value":210.2},{"date":"1985-01-01","value":423.28},{"date":"1986-01-01","value":324.84},{"date":"1987-01-01","value":384.51},{"date":"1988-01-01","value":539.6},{"date":"1989-01-01","value":1782.28},{"date":"1990-01-01","value":620.52},{"date":"1991-01-01","value":1089.27},{"date":"1992-01-01","value":470.79},{"date":"1993-01-01","value":422.24},{"date":"1994-01-01","value":369.74},{"date":"1995-01-01","value":317.1},{"date":"1996-01-01","value":269.05},{"date":"1997-01-01","value":55.27},{"date":"1998-01-01","value":54.92},{"date":"1999-01-01","value":160.53},{"date":"2000-01-01","value":107.92},{"date":"2001-01-01","value":655.8},{"date":"2002-01-01","value":494.28},{"date":"2003-01-01","value":541.0},{"date":"2004-01-01","value":3424.85},{"date":"2005-01-01","value":1779.9},{"date":"2006-01-01","value":2673.42},{"date":"2007-01-01","value":1946.2},{"date":"2008-01-01","value":1651.06},{"date":"2009-01-01","value":2123.55},{"date":"2010-01-01","value":1452.36},{"date":"2011-01-01","value":1207.71},{"date":"2012-01-01","value":1056.96},{"date":"2013-01-01","value":1123.28},{"date":"2014-01-01","value":1416.24},{"date":"2015-01-01","value":1296.68},{"date":"2016-01-01","value":1588.14},{"date":"2017-01-01","value":1984.58},{"date":"2018-01-01","value":3263.12},{"date":"2019-01-01","value":1889.6},{"date":"2020-01-01","value":653.18},{"date":"2021-01-01","value":1168.2},{"date":"2022-01-01","value":1363.2},{"date":"2023-01-01","value":883.2}],"summary":{"latest_period":"2023-01-01","latest_value":883.2,"max":3718.98,"mean":1136.47,"min":54.92,"of":194,"rank":152,"trend":"volatile"}}