{"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-per-unit-of-gdp","source":"Statizoid (derived)","source_url":null,"title":"Pertussis - number of reported cases, per unit of GDP","unit":"units per US$ of GDP"},"observations":[{"date":"1979-01-01","value":1.28451e-06},{"date":"1980-01-01","value":1.4709e-06},{"date":"1981-01-01","value":1.87383e-06},{"date":"1982-01-01","value":1.10008e-06},{"date":"1983-01-01","value":1.74052e-06},{"date":"1984-01-01","value":1.44648e-06},{"date":"1985-01-01","value":1.9104e-06},{"date":"1986-01-01","value":2.50928e-07},{"date":"1987-01-01","value":3.45399e-07},{"date":"1988-01-01","value":9.47795e-09},{"date":"1997-01-01","value":0.0},{"date":"2000-01-01","value":0.0},{"date":"2003-01-01","value":0.0},{"date":"2007-01-01","value":0.0},{"date":"2011-01-01","value":4.73092e-09},{"date":"2021-01-01","value":0.0},{"date":"2025-01-01","value":0.0}],"summary":{"latest_period":"2025-01-01","latest_value":0.0,"max":1.9104e-06,"mean":6.72779e-07,"min":0.0,"of":201,"rank":138,"trend":"volatile"}}