Year	thousand metric tons of CO2 equivalent
1970	2730898.458371973
1971	2078302.4503383024
1972	2741969.5917306254
1973	2530874.293126735
1974	2095332.4138289446
1975	2213911.9255194142
1976	2474274.450890399
1977	2760300.3002541554
1978	2651951.6433674423
1979	2807245.635759866
1980	3010124.668417527
1981	2692509.257360788
1982	4259390.837211209
1983	3778087.7211121884
1984	2668691.8364365217
1985	2579784.5814898196
1986	3032991.4863035358
1987	3771253.569414523
1988	2871914.658403421
1989	2728231.9321978954
1990	-643925.6079912605
1991	-590887.4685332172
1992	-544095.5345784797
1993	-604018.3210006475
1994	-662303.0131705416
1995	-690546.9252843102
1996	-682409.6995989433
1997	-678461.7103558469
1998	-636910.0276391822
1999	-679414.2201413271
2000	-706746.7122965944
2001	-625207.6331248542
2002	-623549.9949973305
2003	-709347.2682955039
2004	-662856.3967160777
2005	-661776.8078118729
2006	-689668.5291228844
2007	-730291.4939808769
2008	-621483.1289480121
2009	-676177.9548362104
2010	-586067.3206669027
2011	-543801.9071786253
2012	-374035.7414102073
2013	-400338.23399796046
2014	-517405.56316091237
2015	-570773.0500746653
2016	-616417.308611122