{"entity":{"iso2":"BG","iso3":"BGR","name":"Bulgaria","slug":"bulgaria"},"indicator":{"licence":"Derived by Statizoid from the sources named on the page","slug":"sulphur-dioxide-and-coal-per-square-kilometre","source":"Statizoid (derived)","source_url":null,"title":"Sulphur dioxide and coal, per square kilometre","unit":"units per square kilometre"},"observations":[{"date":"1961-01-01","value":25.3211},{"date":"1962-01-01","value":28.7069},{"date":"1963-01-01","value":29.943},{"date":"1964-01-01","value":34.6026},{"date":"1965-01-01","value":34.6137},{"date":"1966-01-01","value":32.2155},{"date":"1967-01-01","value":32.3307},{"date":"1968-01-01","value":31.6326},{"date":"1969-01-01","value":31.0716},{"date":"1970-01-01","value":30.5442},{"date":"1971-01-01","value":28.9885},{"date":"1972-01-01","value":28.2377},{"date":"1973-01-01","value":27.4777},{"date":"1974-01-01","value":28.1017},{"date":"1975-01-01","value":28.1313},{"date":"1976-01-01","value":26.8497},{"date":"1977-01-01","value":25.05},{"date":"1978-01-01","value":26.0405},{"date":"1979-01-01","value":26.1729},{"date":"1980-01-01","value":27.668},{"date":"1981-01-01","value":26.9921},{"date":"1982-01-01","value":28.0266},{"date":"1983-01-01","value":27.1882},{"date":"1984-01-01","value":26.8386},{"date":"1985-01-01","value":28.6408},{"date":"1986-01-01","value":28.2645},{"date":"1987-01-01","value":28.4995},{"date":"1988-01-01","value":29.6145},{"date":"1989-01-01","value":28.6709},{"date":"1990-01-01","value":13.2087},{"date":"1991-01-01","value":11.2623},{"date":"1992-01-01","value":10.1237},{"date":"1993-01-01","value":14.1183},{"date":"1994-01-01","value":15.8333},{"date":"1995-01-01","value":15.3657},{"date":"1996-01-01","value":14.9724},{"date":"1997-01-01","value":14.5926},{"date":"1998-01-01","value":12.9959},{"date":"1999-01-01","value":9.82238},{"date":"2000-01-01","value":9.91901},{"date":"2001-01-01","value":9.23746},{"date":"2002-01-01","value":8.48621},{"date":"2003-01-01","value":9.20576},{"date":"2004-01-01","value":8.83337},{"date":"2005-01-01","value":8.7385},{"date":"2006-01-01","value":8.66706},{"date":"2007-01-01","value":9.4831},{"date":"2008-01-01","value":6.62608},{"date":"2009-01-01","value":5.22634},{"date":"2010-01-01","value":3.00328},{"date":"2011-01-01","value":6.0024},{"date":"2012-01-01","value":2.93683},{"date":"2013-01-01","value":1.46324},{"date":"2014-01-01","value":1.38534},{"date":"2015-01-01","value":1.20165},{"date":"2016-01-01","value":0.823095},{"date":"2017-01-01","value":0.816955},{"date":"2018-01-01","value":0.68567},{"date":"2019-01-01","value":0.61701},{"date":"2020-01-01","value":0.593268},{"date":"2021-01-01","value":0.408174},{"date":"2022-01-01","value":0.475726}],"summary":{"latest_period":"2022-01-01","latest_value":0.475726,"max":34.6137,"mean":17.3156,"min":0.408174,"of":207,"rank":94,"trend":"volatile"}}