{"entity":{"iso2":"US","iso3":"USA","name":"United States","slug":"united-states"},"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":71.8972},{"date":"1962-01-01","value":67.0146},{"date":"1963-01-01","value":65.9497},{"date":"1964-01-01","value":61.2489},{"date":"1965-01-01","value":61.975},{"date":"1966-01-01","value":56.2888},{"date":"1967-01-01","value":55.5911},{"date":"1968-01-01","value":56.2567},{"date":"1969-01-01","value":54.2777},{"date":"1970-01-01","value":49.1019},{"date":"1971-01-01","value":55.8371},{"date":"1972-01-01","value":54.7516},{"date":"1973-01-01","value":53.847},{"date":"1974-01-01","value":49.6037},{"date":"1975-01-01","value":50.6319},{"date":"1976-01-01","value":50.1092},{"date":"1977-01-01","value":56.3049},{"date":"1978-01-01","value":54.5121},{"date":"1979-01-01","value":57.3406},{"date":"1980-01-01","value":50.2641},{"date":"1981-01-01","value":60.4004},{"date":"1982-01-01","value":66.5454},{"date":"1983-01-01","value":45.6332},{"date":"1984-01-01","value":56.6569},{"date":"1985-01-01","value":65.2906},{"date":"1986-01-01","value":61.8478},{"date":"1987-01-01","value":59.6861},{"date":"1988-01-01","value":50.8093},{"date":"1989-01-01","value":57.0831},{"date":"1990-01-01","value":59.7299},{"date":"1991-01-01","value":57.1927},{"date":"1992-01-01","value":63.0082},{"date":"1993-01-01","value":52.05},{"date":"1994-01-01","value":63.373},{"date":"1995-01-01","value":54.3364},{"date":"1996-01-01","value":59.6053},{"date":"1997-01-01","value":60.5729},{"date":"1998-01-01","value":60.7305},{"date":"1999-01-01","value":60.0522},{"date":"2000-01-01","value":62.7619},{"date":"2001-01-01","value":61.0767},{"date":"2002-01-01","value":58.1434},{"date":"2003-01-01","value":59.6703},{"date":"2004-01-01","value":65.0477},{"date":"2005-01-01","value":64.2444},{"date":"2006-01-01","value":60.3612},{"date":"2007-01-01","value":63.491},{"date":"2008-01-01","value":63.2505},{"date":"2009-01-01","value":66.7226},{"date":"2010-01-01","value":65.101},{"date":"2011-01-01","value":60.6655},{"date":"2012-01-01","value":56.817},{"date":"2013-01-01","value":62.8546},{"date":"2014-01-01","value":71.6114}],"summary":{"latest_period":"2014-01-01","latest_value":71.6114,"max":71.8972,"mean":59.0598,"min":45.6332,"of":204,"rank":50,"trend":"rising"}}