{"entity":{"iso2":"TN","iso3":"TUN","name":"Tunisia","slug":"tunisia"},"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":"1981-01-01","value":-48.7823},{"date":"1982-01-01","value":-64.4318},{"date":"1986-01-01","value":-41.9087},{"date":"1987-01-01","value":-56.0714},{"date":"1988-01-01","value":-6.50407},{"date":"1989-01-01","value":-91.3043},{"date":"1990-01-01","value":580.0},{"date":"1991-01-01","value":-88.2353},{"date":"1992-01-01","value":562.5},{"date":"1993-01-01","value":-43.3962},{"date":"1994-01-01","value":-90.0},{"date":"1995-01-01","value":66.6667},{"date":"1996-01-01","value":-40.0},{"date":"1997-01-01","value":66.6667},{"date":"1998-01-01","value":-60.0},{"date":"1999-01-01","value":-50.0},{"date":"2000-01-01","value":0.0},{"date":"2001-01-01","value":-100.0},{"date":"2003-01-01","value":100.0},{"date":"2004-01-01","value":-50.0},{"date":"2005-01-01","value":500.0},{"date":"2006-01-01","value":33.3333},{"date":"2007-01-01","value":-25.0},{"date":"2008-01-01","value":100.0},{"date":"2009-01-01","value":-33.3333},{"date":"2010-01-01","value":-50.0},{"date":"2011-01-01","value":-100.0},{"date":"2014-01-01","value":64.7727},{"date":"2015-01-01","value":-97.2414},{"date":"2016-01-01","value":75.0},{"date":"2017-01-01","value":100.0},{"date":"2018-01-01","value":921.429},{"date":"2019-01-01","value":-12.5874},{"date":"2020-01-01","value":-91.2},{"date":"2021-01-01","value":-81.8182},{"date":"2022-01-01","value":150.0},{"date":"2024-01-01","value":70.2703},{"date":"2025-01-01","value":-90.873}],"summary":{"latest_period":"2025-01-01","latest_value":-90.873,"max":921.429,"mean":52.0513,"min":-100.0,"of":191,"rank":98,"trend":"volatile"}}