{"entity":{"iso2":"WS","iso3":"WSM","name":"Samoa","slug":"samoa"},"indicator":{"licence":"Derived by Statizoid from the sources named on the page","slug":"pertussis-number-of-reported-cases-annual-growth-rate","source":"Statizoid (derived)","source_url":null,"title":"Pertussis - number of reported cases, annual growth rate","unit":"% change on previous year"},"observations":[{"date":"1975-01-01","value":450.0},{"date":"1976-01-01","value":110.606},{"date":"1977-01-01","value":-34.5324},{"date":"1978-01-01","value":53.8462},{"date":"1979-01-01","value":-71.4286},{"date":"1980-01-01","value":182.5},{"date":"1981-01-01","value":-12.3894},{"date":"1982-01-01","value":-33.3333},{"date":"1983-01-01","value":-100.0},{"date":"1990-01-01","value":-100.0},{"date":"1993-01-01","value":-100.0},{"date":"2004-01-01","value":-100.0},{"date":"2009-01-01","value":-100.0},{"date":"2011-01-01","value":-100.0},{"date":"2025-01-01","value":-64.4518}],"summary":{"latest_period":"2025-01-01","latest_value":-64.4518,"max":450.0,"mean":-1.27888,"min":-100.0,"of":191,"rank":61,"trend":"volatile"}}