Year	thousand metric tons of CO2 equivalent
1970	30.7613824462899
1971	30.440588989260277
1972	34.40274475098022
1973	38.8761773681598
1974	23.132160339360126
1975	24.62536682128976
1976	28.877075805659928
1977	30.71664031982013
1978	35.39863952636978
1979	27.587175598139993
1980	38.15948974609023
1981	35.72214416504005
1982	32.68786437987987
1983	34.72611877441011
1984	34.898634033199784
1985	36.818730468749976
1986	45.32914001464934
1987	-515.3330700683593
1988	43.91231994628987
1989	47.54792968749956
1990	37.397491455079944
1991	-9.528961181639716
1992	100.77975463867006
1993	183.95275878905977
1994	225.02151489257994
1995	218.09996032715026
1996	275.56703186034974
1997	284.9428253173801
1998	133.66836547852017
1999	175.91165161132994
2000	88.9775390625
2001	120.57592773437045
2002	122.4012603759802
2003	60.593780517579944
2004	83.01783752441042
2005	102.68188476562045
2006	161.66369628905977
2007	129.01525878906068
2008	149.7909545898401
2009	144.57263183593932
2010	89.69097900390989
2011	134.50915527344023
2012	31.729431152340112
2013	380.0865783691397
2014	618.08499145508
2015	454.6368713378897
2016	577.57272338867