Year	thousand metric tons of CO2 equivalent
1970	-4926.7905271912
1971	-6548.720956878699
1972	-8103.211762046798
1973	-8762.925856399499
1974	-7177.839414977999
1975	-5913.302180481
1976	-5907.1273231505975
1977	-4748.8548282623
1978	-5769.610604095499
1979	-4214.6283164978
1980	-2516.8012390136987
1981	-547.9934135436986
1982	-590.0343811034984
1983	153.88584518430002
1984	-1456.7432994843005
1985	-1121.3638854980004
1986	-929.9572212219005
1987	-1071.5870803833004
1988	-595.7077827454004
1989	-723.0146057129002
1990	-4227.968368530299
1991	-3230.9104766845994
1992	-4115.7010269165
1993	-3824.6476211547997
1994	-4111.910614013701
1995	-3835.937957763701
1996	-4638.5927886963
1997	-7975.7004852294995
1998	-8284.041595458999
1999	-8793.308357238799
2000	-9433.628036499002
2001	-8346.582710266099
2002	-8143.3863372803025
2003	-8812.222854614301
2004	-8780.403991699197
2005	-1917.7460632324
2006	-3461.438720703103
2007	-4131.938720703103
2008	-5081.010238647497
2009	-7312.830612182603
2010	-10062.053680419893
2011	-10062.3428344727
2012	-9334.2520141602
2013	-11388.351989746094
2014	-10229.170104980498
2015	-13353.781829833999
2016	-13100.084442138701