{"entity":{"iso2":"TD","iso3":"TCD","name":"Chad","slug":"chad"},"indicator":{"licence":"Derived by Statizoid from the sources named on the page","slug":"pertussis-number-of-reported-cases-per-square-kilometre","source":"Statizoid (derived)","source_url":null,"title":"Pertussis - number of reported cases, per square kilometre","unit":"units per square kilometre"},"observations":[{"date":"1974-01-01","value":0.00436488},{"date":"1975-01-01","value":0.00660658},{"date":"1976-01-01","value":0.00952907},{"date":"1977-01-01","value":0.00470934},{"date":"1978-01-01","value":0.00187897},{"date":"1982-01-01","value":0.000216804},{"date":"1983-01-01","value":0.00181703},{"date":"1984-01-01","value":0.0020108},{"date":"1985-01-01","value":0.00118806},{"date":"1986-01-01","value":0.00182894},{"date":"1995-01-01","value":0.00456242},{"date":"1996-01-01","value":0.00397395},{"date":"1997-01-01","value":0.00436626},{"date":"1998-01-01","value":0.00468393}],"summary":{"latest_period":"1998-01-01","latest_value":0.00468393,"max":0.00952907,"mean":0.0036955,"min":0.000216804,"of":204,"rank":29,"trend":"volatile"}}