Methane emissions in metric tons generated by chemical industry in Iran

Period	Methane emissions by chemical industry	Change
2022	31,400	-1,000
2021	32,400	0
2020	32,400	+300
2019	32,100	-700
2018	32,800	+2,600
2017	30,200	-900
2016	31,100	+4,700
2015	26,400	-1,200
2014	27,600	+5,400
2013	22,200	-1,000
2012	23,200	-5,300
2011	28,500	0
2010	28,500	+4,900
2009	23,600	+1,900
2008	21,700	+1,200
2007	20,500	-2,900
2006	23,400	+13,520
2005	9,880	+3,040
2004	6,840	+1,930
2003	4,910	-100
2002	5,010	+620
2001	4,390	+1,220
2000	3,170	-350
1999	3,520	-530
1998	4,050	+2,930
1997	1,120	-340
1996	1,460	-640
1995	2,100	+250
1994	1,850	+999
1993	851	0
1992	851	0
1991	851	0
1990	851	0
1989	851	+833
1988	18	0
1987	18	0
1986	18	0
1985	18	0
1984	18	0
1983	18	0
1982	18	0
1981	18	0
1980	18	0
1979	18	0
1978	18	0
1977	18	0
1976	18	0
1975	18	0
1974	18	0
1973	18	0
1972	18	0
1971	18	0
1970	18	+1
1969	17	+1
1968	16	+1
1967	15	+1
1966	14	+1
1965	13	+1
1964	12	+2
1963	10	+1
1962	8	+0
1961	8	-1
1960	9	+4
1959	5	-0
1958	5	+1
1957	4	+1
1956	3	+2
1955	1	-0
1954	1	-0
1953	1	-0
1952	1	+0
1951	1	+0
1950	1	+0
1949	1	+0
1948	1	+0
1947	1	+0
1946	0	+0
1945	0	+0
1944	0	+0
1943	0	+0
1942	0	+0
1941	0	+0
1940	0	+0
1939	0	+0
1938	0	+0
1937	0	+0
1936	0	+0
1935	0	+0
1934	0	+0
1933	0	+0
1932	0	+0
1931	0	+0
1930	0	+0
1929	0	+0
1928	0	+0
1927	0	+0
1926	0	+0
1925	0	+0
1924	0	+0
1923	0	+0
1922	0	+0
1921	0	+0
1920	0	+0
1919	0	+0
1918	0	+0
1917	0	+0
1916	0	+0
1915	0	+0
1914	0	+0
1913	0	+0
1912	0	+0
1911	0	+0
1910	0	0
1909	0	0
1908	0	0
1907	0	0
1906	0	0
1905	0	0
1904	0	0
1903	0