Year	thousand metric tons of CO2 equivalent
1970	468.26790741271986
1971	1384.7204111633298
1972	2321.8343059082
1973	3515.1752109375
1974	4366.454605346681
1975	5135.639650634769
1976	6087.52522720337
1977	7039.149372711179
1978	7949.703571014402
1979	8806.936206512448
1980	9708.35487625122
1981	10592.91248550415
1982	11497.25951057434
1983	12389.77570041656
1984	13323.99088359833
1985	14114.312228813169
1986	15024.67072734833
1987	15952.831418266298
1988	16868.390826425548
1989	17828.37235596657
1990	101.9171545505501
1991	39.66623902320998
1992	-172.5257165431999
1993	-334.15438365936006
1994	-363.86855602263995
1995	-360.15933609009016
1996	-393.5456104278601
1997	-334.08302497863997
1998	-283.97122764586993
1999	-371.2289466857901
2000	-424.6356749534598
2001	-640.0994811057999
2002	-729.29313898087
2003	-714.5010247230498
2004	-737.1289544105498
2005	-725.8125481605498
2006	-431.95280694962
2007	-638.1458263397199
2008	-1097.2066116332999
2009	-1402.8169002533
2010	-1375.96199178696
2011	-1459.61992430687
2012	-1479.89995360374
2013	-1372.2991151809701
2014	-1446.3067858219101
2015	-1501.2264933586098
2016	-1573.8841631412502