{"entity":{"iso2":"BG","iso3":"BGR","name":"Bulgaria","slug":"bulgaria"},"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":-93.7193},{"date":"1976-01-01","value":-70.9877},{"date":"1977-01-01","value":887.943},{"date":"1978-01-01","value":-34.7452},{"date":"1979-01-01","value":-84.0484},{"date":"1980-01-01","value":6.2069},{"date":"1981-01-01","value":153.896},{"date":"1982-01-01","value":-56.7775},{"date":"1983-01-01","value":-60.9467},{"date":"1984-01-01","value":242.424},{"date":"1985-01-01","value":-82.3009},{"date":"1986-01-01","value":32.5},{"date":"1987-01-01","value":1.88679},{"date":"1988-01-01","value":-74.0741},{"date":"1989-01-01","value":7.14286},{"date":"1990-01-01","value":73.3333},{"date":"1991-01-01","value":-50.0},{"date":"1992-01-01","value":530.769},{"date":"1993-01-01","value":-9.7561},{"date":"1994-01-01","value":-70.2703},{"date":"1995-01-01","value":250.0},{"date":"1996-01-01","value":-48.0519},{"date":"1997-01-01","value":10.0},{"date":"1998-01-01","value":-9.09091},{"date":"1999-01-01","value":207.5},{"date":"2000-01-01","value":-13.8211},{"date":"2001-01-01","value":-23.5849},{"date":"2002-01-01","value":1.23457},{"date":"2003-01-01","value":119.512},{"date":"2004-01-01","value":23.3333},{"date":"2005-01-01","value":40.991},{"date":"2006-01-01","value":7.02875},{"date":"2007-01-01","value":-19.7015},{"date":"2008-01-01","value":-28.2528},{"date":"2009-01-01","value":30.0518},{"date":"2010-01-01","value":-78.4861},{"date":"2011-01-01","value":-14.8148},{"date":"2012-01-01","value":121.739},{"date":"2013-01-01","value":-12.7451},{"date":"2014-01-01","value":-41.573},{"date":"2015-01-01","value":-32.6923},{"date":"2016-01-01","value":180.0},{"date":"2017-01-01","value":18.3673},{"date":"2018-01-01","value":-1.72414},{"date":"2019-01-01","value":-38.5965},{"date":"2020-01-01","value":-61.4286},{"date":"2021-01-01","value":-88.8889},{"date":"2022-01-01","value":466.667},{"date":"2023-01-01","value":17.6471},{"date":"2025-01-01","value":-96.7659}],"summary":{"latest_period":"2025-01-01","latest_value":-96.7659,"max":887.943,"mean":42.6466,"min":-96.7659,"of":191,"rank":112,"trend":"volatile"}}