Year	thousand metric tons of CO2 equivalent
1970	-1888.8073593750023
1971	1529.8482570311962
1972	1670.8946843749982
1973	1832.2395906250003
1974	1911.0382546875007
1975	1712.9220679686996
1976	1796.8130914061994
1977	1908.275883593702
1978	2148.3141187499987
1979	2449.196376562505
1980	2705.092909375001
1981	2581.706228906198
1982	2467.732826562502
1983	2309.0013484375067
1984	2667.7167015625055
1985	2518.883775781198
1986	2501.3626484375063
1987	-3060.1150437499973
1988	2450.7705296875065
1989	2267.2104867187063
1990	-1171.0698242187937
1991	-737.849609375
1992	-724.8017578125
1993	490.9443359375
1994	1227.0717773437063
1995	2652.4331054687063
1996	3338.5029296875
1997	3742.0517578125
1998	4258.287109375
1999	5186.421875
2000	3690.390625
2001	3221.2099609375
2002	3513.3637695312063
2003	2990.1235351560026
2004	3089.9228515620052
2005	3164.689453125
2006	3088.2900390620052
2007	3033.4208984370052
2008	3151.6416015620052
2009	3049.81640625
2010	2620.3471679687063
2011	3026.318115234404
2012	1628.0083007812063
2013	2670.26171875
2014	2763.5737304687063
2015	3753.498046875
2016	5259.33984375