Year	thousand metric tons of CO2 equivalent
1970	31092.35662263195
1971	30155.14734655024
1972	31166.92642219164
1973	30469.977983006862
1974	32944.78034161812
1975	34257.89161053085
1976	32852.87556101896
1977	35291.40476677954
1978	35341.07413434161
1979	45465.6125621125
1980	47867.27055028354
1981	50657.95418205799
1982	58753.80663148882
1983	59114.00377499927
1984	58720.83552150659
1985	50240.67516271495
1986	43506.65729920329
1987	26131.531945373605
1988	38078.86114449225
1989	30446.32033264406
1990	-20949.295790279582
1991	-28917.75802287342
1992	-31868.11590895281
1993	-34136.05455369131
1994	-41057.29667585817
1995	-47828.05331360711
1996	-46074.25299670538
1997	-56780.00114173182
1998	-51846.147444355316
1999	-52008.9374568272
2000	-62528.86454644911
2001	-50429.22350866621
2002	-59034.6914644874
2003	-69191.47826867577
2004	-38475.271066706744
2005	-15198.406941337289
2006	6822.38979115435
2007	-133.1151938433868
2008	15370.98503105653
2009	1529.8389365474432
2010	7008.09266745413
2011	15327.479321781822
2012	57161.69064609325
2013	82189.37935441625
2014	108300.64060509224
2015	92241.34363135629
2016	84106.45590791115