{"entity":{"iso2":"SL","iso3":"SLE","name":"Sierra Leone","slug":"sierra-leone"},"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":"1980-01-01","value":13.614},{"date":"1981-01-01","value":29.0303},{"date":"1982-01-01","value":-31.7855},{"date":"1983-01-01","value":21.5439},{"date":"1984-01-01","value":-9.18014},{"date":"1985-01-01","value":4.06866},{"date":"1986-01-01","value":-92.4863},{"date":"1987-01-01","value":85.3659},{"date":"1988-01-01","value":-95.614}],"summary":{"latest_period":"1988-01-01","latest_value":-95.614,"max":85.3659,"mean":-8.38259,"min":-95.614,"of":191,"rank":107,"trend":"volatile"}}