Year	thousand metric tons of CO2 equivalent
1970	4377094.517188606
1971	3344271.530366771
1972	4074230.616145626
1973	3949960.0325851785
1974	3414709.912026575
1975	3679443.2796019367
1976	3907402.8983579124
1977	4354399.514592642
1978	4288364.039213462
1979	4893492.236046997
1980	4927594.483820687
1981	4474453.730226826
1982	6097785.634796948
1983	5638032.8096914245
1984	4239805.767977265
1985	4164299.3814212554
1986	4563713.931130498
1987	5402367.963381987
1988	4446962.071653314
1989	4494111.636640645
1990	-1023697.0395578844
1991	-959417.6086116994
1992	-867475.3006078548
1993	-908432.9630713701
1994	-1000644.0956071424
1995	-1064283.2672243775
1996	-1013332.5664302895
1997	-912526.7968205393
1998	-865571.3753138146
1999	-904642.2041958941
2000	-1014675.3021303756
2001	-935119.8313480971
2002	-994160.2092039831
2003	-1054315.5138764558
2004	-983638.6986995715
2005	-942737.6277879531
2006	-937695.9434690574
2007	-919309.1874125429
2008	-827537.3076944213
2009	-824640.8956052827
2010	-750161.8409538944
2011	-706229.7823675761
2012	-485433.20658421505
2013	-450855.01729393634
2014	-611613.6637213684
2015	-638109.5963012718
2016	-686834.7647407176