{"entity":{"iso2":"NZ","iso3":"NZL","name":"New Zealand","slug":"new-zealand"},"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":"1991-01-01","value":142.857},{"date":"1992-01-01","value":-63.8009},{"date":"1993-01-01","value":-40.0},{"date":"1994-01-01","value":-27.0833},{"date":"1995-01-01","value":-71.4286},{"date":"1998-01-01","value":-46.1268},{"date":"1999-01-01","value":583.66},{"date":"2000-01-01","value":296.08},{"date":"2001-01-01","value":0.0},{"date":"2002-01-01","value":-74.2216},{"date":"2003-01-01","value":-44.8502},{"date":"2004-01-01","value":492.36},{"date":"2005-01-01","value":-22.0407},{"date":"2006-01-01","value":-58.75},{"date":"2007-01-01","value":-70.4991},{"date":"2010-01-01","value":-29.5732},{"date":"2011-01-01","value":331.169},{"date":"2012-01-01","value":181.024},{"date":"2013-01-01","value":-39.3355},{"date":"2014-01-01","value":-67.6384},{"date":"2015-01-01","value":6.27843},{"date":"2016-01-01","value":-6.16438},{"date":"2017-01-01","value":95.5292},{"date":"2018-01-01","value":37.7508},{"date":"2019-01-01","value":-59.1463},{"date":"2020-01-01","value":-85.8209},{"date":"2021-01-01","value":-74.8538},{"date":"2022-01-01","value":-58.1395},{"date":"2025-01-01","value":53.2037}],"summary":{"latest_period":"2025-01-01","latest_value":53.2037,"max":583.66,"mean":44.1531,"min":-85.8209,"of":191,"rank":21,"trend":"volatile"}}