{"entity":{"iso2":null,"iso3":null,"name":"USSR","slug":"ussr"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"annual-percentage-change-hydro","source":"Energy Institute - Statistical Review of World Energy (2026); Smil (2017) \u2013 with major processing by Our World in Data","source_url":"https://ourworldindata.org/grapher/annual-percentage-change-hydro","title":"Annual percentage change in primary energy from hydropower","unit":"%"},"observations":[{"date":"1966-01-01","value":12.7576},{"date":"1967-01-01","value":-3.54159},{"date":"1968-01-01","value":17.4651},{"date":"1969-01-01","value":10.7084},{"date":"1970-01-01","value":7.98396},{"date":"1971-01-01","value":1.38449},{"date":"1972-01-01","value":54.366},{"date":"1973-01-01","value":-37.1475},{"date":"1974-01-01","value":7.91614},{"date":"1975-01-01","value":-4.57699},{"date":"1976-01-01","value":7.73731},{"date":"1977-01-01","value":8.30957},{"date":"1978-01-01","value":15.4319},{"date":"1979-01-01","value":1.36828},{"date":"1980-01-01","value":6.9264},{"date":"1981-01-01","value":1.52551},{"date":"1982-01-01","value":-6.46179},{"date":"1983-01-01","value":3.25458},{"date":"1984-01-01","value":12.5448}],"summary":{"latest_period":"1984-01-01","latest_value":12.5448,"max":54.366,"mean":6.20801,"min":-37.1475,"of":3,"rank":1,"trend":"volatile"}}