{"entity":{"iso2":"BE","iso3":"BEL","name":"Belgium","slug":"belgium"},"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":"1986-01-01","value":66.6667},{"date":"1987-01-01","value":200.0},{"date":"1988-01-01","value":-80.0},{"date":"1989-01-01","value":0.0},{"date":"1994-01-01","value":50.0},{"date":"1995-01-01","value":0.0},{"date":"1996-01-01","value":166.667},{"date":"1997-01-01","value":75.0},{"date":"2002-01-01","value":-3.57143},{"date":"2003-01-01","value":118.519},{"date":"2004-01-01","value":62.7119},{"date":"2005-01-01","value":140.625},{"date":"2006-01-01","value":-15.1515},{"date":"2007-01-01","value":49.4898},{"date":"2008-01-01","value":-11.2628},{"date":"2011-01-01","value":-22.5564},{"date":"2012-01-01","value":432.039},{"date":"2013-01-01","value":108.394},{"date":"2014-01-01","value":31.4361},{"date":"2015-01-01","value":-19.8534},{"date":"2016-01-01","value":74.9792},{"date":"2017-01-01","value":-27.0784},{"date":"2018-01-01","value":-11.7915},{"date":"2019-01-01","value":-18.9069},{"date":"2020-01-01","value":-88.7067},{"date":"2021-01-01","value":-87.0968},{"date":"2022-01-01","value":400.0},{"date":"2024-01-01","value":194.264},{"date":"2025-01-01","value":-93.4373}],"summary":{"latest_period":"2025-01-01","latest_value":-93.4373,"max":432.039,"mean":58.3234,"min":-93.4373,"of":191,"rank":104,"trend":"volatile"}}