Year	thousand metric tons of CO2 equivalent
1970	-5609.4718749999665
1971	-498.08187499998166
1972	9297.453437500051
1973	11139.480156250036
1974	11532.189687500053
1975	10958.379687499946
1976	12215.831406250058
1977	13515.068281249958
1978	8543.293437500048
1979	14941.678749999948
1980	14907.51718750003
1981	16484.199375000055
1982	15051.16281250005
1983	13124.02859374995
1984	14192.995937500018
1985	14543.693749999984
1986	15919.676718750052
1987	12925.896015624974
1988	19644.900468750027
1989	22310.207656250008
1990	-1713.732421875
1991	3725.669921875
1992	-249.97265625
1993	3679.71875
1994	3923.607421875
1995	2177.69140625
1996	5554.486328125
1997	8757.076171875
1998	5233.58203125
1999	-970.04296875
2000	-1527.890625
2001	51.158203125
2002	3684.236328125
2003	3808.359375
2004	3376.666015625
2005	4249.3515625
2006	5331.94921875
2007	3284.53125
2008	2221.3515625
2009	7387.76953125
2010	9852.25
2011	10063.345703125
2012	21393.38671875
2013	19182.59765625
2014	21276.232421875
2015	24183.58203125
2016	27049.65234375