Year	thousand metric tons of CO2 equivalent
1970	3161.130078125002
1971	3400.330279541
1972	2668.2752990722993
1973	2885.765686035199
1974	3623.7492553710995
1975	-566.7453613281007
1976	-419.1587646484006
1977	-210.68443603520132
1978	744.2239501953015
1979	843.1268432616998
1980	4435.9271606445
1981	-4361.143823242199
1982	-2935.5688110351985
1983	-1395.118518066399
1984	-2087.137121581997
1985	-1788.2962524413992
1986	-2876.7204833983997
1987	-1852.6755371093996
1988	1796.1217041015975
1989	-289.98093261719646
1990	-476.8958435058994
1991	-435.56225585940047
1992	-192.65118408200033
1993	-140.75729370119916
1994	-79.6698150634802
1995	-63.9212493896498
1996	-88.55596923828034
1997	-64.51928710938046
1998	-60.816345214800094
1999	-90.91781616210028
2000	11.368194580099953
2001	-9.126892089800094
2002	35.16546630859921
2003	-8.067871093799113
2004	-161.13952636720023
2005	-302.1009521484011
2006	-482.30590820309953
2007	-497.3795166015989
2008	-526.1091308594005
2009	-613.0128173828016
2010	-892.4125976563009
2011	-820.3464355469005
2012	-2160.1973876953016
2013	-2137.4987792969005
2014	-4700.196777343801
2015	-5645.154174804698
2016	-3144.1192626953016