{"entity":{"iso2":"BG","iso3":"BGR","name":"Bulgaria","slug":"bulgaria"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"average-nitrate-concentration-in-freshwater","source":"European Environment Agency (2023) \u2013 with minor processing by Our World in Data","source_url":"https://ourworldindata.org/grapher/average-nitrate-concentration-in-freshwater","title":"Average nitrate concentration in freshwater","unit":"milligrams per litre"},"observations":[{"date":"2000-01-01","value":23.3202},{"date":"2001-01-01","value":24.2648},{"date":"2002-01-01","value":24.2648},{"date":"2003-01-01","value":23.3348},{"date":"2004-01-01","value":23.944},{"date":"2005-01-01","value":22.5327},{"date":"2006-01-01","value":21.4498},{"date":"2007-01-01","value":23.9876},{"date":"2008-01-01","value":22.9209},{"date":"2009-01-01","value":23.7209},{"date":"2010-01-01","value":20.7278},{"date":"2011-01-01","value":20.2627},{"date":"2012-01-01","value":22.1889},{"date":"2013-01-01","value":22.8561},{"date":"2014-01-01","value":25.5735},{"date":"2015-01-01","value":28.75},{"date":"2016-01-01","value":29.0171},{"date":"2017-01-01","value":29.278},{"date":"2018-01-01","value":27.0876},{"date":"2019-01-01","value":26.9569},{"date":"2020-01-01","value":29.3393},{"date":"2021-01-01","value":29.3393}],"summary":{"latest_period":"2021-01-01","latest_value":29.3393,"max":29.3393,"mean":24.7781,"min":20.2627,"of":34,"rank":4,"trend":"rising"}}