Year	thousand metric tons of CO2 equivalent
1970	4.774398651123306
1971	5.252497894287444
1972	6.769108901977461
1973	7.136509559630667
1974	2.8115953521730717
1975	3.892907745361299
1976	6.247401062011704
1977	5.831707366943192
1978	8.992992034912504
1979	12.836911926269977
1980	11.246197448729617
1981	9.98968151855479
1982	3.9902891235349216
1983	8.260002624511571
1984	11.062290496830201
1985	16.44380172728961
1986	14.873998962402538
1987	-57.48869226074066
1988	14.180603637700074
1989	7.3803207397496635
1990	-111.13670349121003
1991	-94.61059570313046
1992	-118.04030227660951
1993	-167.67980575561523
1994	-213.47390937805176
1995	-206.29132080078034
1996	-209.50449371337982
1997	-196.1488189697302
1998	-180.59010314941042
1999	-163.23831176757994
2000	-82.28628540038972
2001	-73.99200439453034
2002	-84.76402282715026
2003	-7.126449584960028
2004	-394.9495849609393
2005	-445.4454803466797
2006	-447.1551513671893
2007	-252.25865173340026
2008	-334.68995666504
2009	-374.1562042236301
2010	314.72328186034974
2011	568.90673828125
2012	398.87451171875
2013	539.14547729492
2014	317.58917236327943
2015	474.86201477050963
2016	533.1030883789099