{"entity":{"iso2":null,"iso3":null,"name":"USSR","slug":"ussr"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"nitrogen-use-efficiency","source":"Lassaletta et al. (2014) \u2013 processed by Our World in Data","source_url":"https://ourworldindata.org/grapher/nitrogen-use-efficiency","title":"Nitrogen use efficiency","unit":"%"},"observations":[{"date":"1961-01-01","value":116.281},{"date":"1962-01-01","value":102.767},{"date":"1963-01-01","value":80.1443},{"date":"1964-01-01","value":97.4567},{"date":"1965-01-01","value":73.3724},{"date":"1966-01-01","value":84.5114},{"date":"1967-01-01","value":72.0288},{"date":"1968-01-01","value":73.5297},{"date":"1969-01-01","value":66.4679},{"date":"1970-01-01","value":66.1221},{"date":"1971-01-01","value":58.687},{"date":"1972-01-01","value":52.5153},{"date":"1973-01-01","value":62.2132},{"date":"1974-01-01","value":52.3774},{"date":"1975-01-01","value":39.3182},{"date":"1976-01-01","value":56.8241},{"date":"1977-01-01","value":49.8805},{"date":"1978-01-01","value":55.678},{"date":"1979-01-01","value":46.9712},{"date":"1980-01-01","value":45.831},{"date":"1981-01-01","value":40.3572},{"date":"1982-01-01","value":43.9292},{"date":"1983-01-01","value":40.7231},{"date":"1984-01-01","value":37.9379},{"date":"1985-01-01","value":40.2321},{"date":"1986-01-01","value":40.2459},{"date":"1987-01-01","value":40.1008},{"date":"1988-01-01","value":38.5295},{"date":"1989-01-01","value":45.96},{"date":"1990-01-01","value":52.6886},{"date":"1991-01-01","value":45.3717}],"summary":{"latest_period":"1991-01-01","latest_value":45.3717,"max":116.281,"mean":58.6791,"min":37.9379,"of":1,"rank":1,"trend":"falling"}}