Year	thousand metric tons of CO2 equivalent
1970	-228.85032762527544
1971	-218.750957584381
1972	-222.1890845432281
1973	-250.46793159866365
1974	-268.7414060478209
1975	-271.8837461318967
1976	-230.34418432617167
1977	-282.35869389343225
1978	-250.31622468566957
1979	-339.5569013595582
1980	102.47265303802533
1981	330.41972328186057
1982	465.2527708816524
1983	504.9688261032097
1984	705.9699594688414
1985	904.3648526763923
1986	581.1632746505738
1987	534.0455384063725
1988	442.501693840027
1989	276.64141258239715
1991	-20.28267669678098
1992	-19.60653352736972
1993	-18.731056690219702
1994	-18.125248432160333
1995	20.56663131714049
1996	34.68375015258971
1997	16.16923522949037
1998	-7.847213745119916
1999	157.26614618301028
2000	163.00435018539065
2001	251.3073353767395
2002	222.55042695998964
2003	238.17334842682067
2004	223.85868787764957
2005	247.55872488022032
2006	249.8997030258197
2007	262.10538053512937
2008	259.39809036255065
2009	263.3987483978308
2010	238.83987045288086
2011	297.11297607422057
2012	407.8329582214392
2013	447.8856468200702
2014	486.7994155883789
2015	753.4231719970703
2016	708.1697082519495