{"entity":{"iso2":"VN","iso3":"VNM","name":"Vietnam","slug":"viet-nam"},"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":14.7059},{"date":"1967-01-01","value":10.2564},{"date":"1968-01-01","value":11.6279},{"date":"1969-01-01","value":12.5},{"date":"1970-01-01","value":11.1111},{"date":"1971-01-01","value":2.33334},{"date":"1972-01-01","value":-31.2704},{"date":"1973-01-01","value":-0.473942},{"date":"1974-01-01","value":0.0},{"date":"1975-01-01","value":19.0476},{"date":"1976-01-01","value":11.4},{"date":"1977-01-01","value":7.71993},{"date":"1978-01-01","value":33.3333},{"date":"1979-01-01","value":25.0},{"date":"1980-01-01","value":48.8},{"date":"1981-01-01","value":1.27689},{"date":"1982-01-01","value":3.51692},{"date":"1983-01-01","value":-21.6026},{"date":"1984-01-01","value":30.7441},{"date":"1985-01-01","value":-7.62977},{"date":"1986-01-01","value":-4.73934},{"date":"1987-01-01","value":-1.63468},{"date":"1988-01-01","value":29.4075},{"date":"1989-01-01","value":114.294},{"date":"1990-01-01","value":39.8906},{"date":"1991-01-01","value":17.6569},{"date":"1992-01-01","value":14.4214},{"date":"1993-01-01","value":10.1965},{"date":"1994-01-01","value":16.0452},{"date":"1995-01-01","value":14.4866},{"date":"1996-01-01","value":13.4757},{"date":"1997-01-01","value":-2.92305},{"date":"1998-01-01","value":-4.82114},{"date":"1999-01-01","value":24.146},{"date":"2000-01-01","value":5.64107},{"date":"2001-01-01","value":25.146},{"date":"2002-01-01","value":-0.0658931},{"date":"2003-01-01","value":4.33015},{"date":"2004-01-01","value":-6.15191},{"date":"2005-01-01","value":-7.20058},{"date":"2006-01-01","value":19.2077},{"date":"2007-01-01","value":13.8298},{"date":"2008-01-01","value":15.8087},{"date":"2009-01-01","value":15.3671},{"date":"2010-01-01","value":-4.84581},{"date":"2011-01-01","value":44.002},{"date":"2012-01-01","value":29.7736},{"date":"2013-01-01","value":8.46878},{"date":"2014-01-01","value":7.51517},{"date":"2015-01-01","value":-9.7192},{"date":"2016-01-01","value":13.9301},{"date":"2017-01-01","value":34.4052},{"date":"2018-01-01","value":-3.32673},{"date":"2019-01-01","value":-20.4186},{"date":"2020-01-01","value":10.2092},{"date":"2021-01-01","value":7.96793},{"date":"2022-01-01","value":21.9097},{"date":"2023-01-01","value":-15.941},{"date":"2024-01-01","value":10.0495},{"date":"2025-01-01","value":14.7687}],"summary":{"latest_period":"2025-01-01","latest_value":14.7687,"max":114.294,"mean":11.616,"min":-31.2704,"of":68,"rank":13,"trend":"volatile"}}