Year	thousand metric tons of CO2 equivalent
1970	986.7636275482018
1971	1064.0737070403993
1972	1428.8575279369034
1973	1850.3183570385063
1974	1891.0761117186976
1975	2229.268532128902
1976	2537.930047875998
1977	2997.0789456177044
1978	2865.930683349593
1979	2967.767874641412
1980	3518.846861328091
1981	3715.2896513672085
1982	3992.19894140619
1983	4711.047037109405
1984	4655.064915039096
1985	4982.4237587890875
1986	5349.7368027344055
1987	3231.7926601562012
1988	5912.000214843703
1989	6734.339873437504
1990	-1606.012207031301
1991	-1629.387939453096
1992	-1647.703125
1993	-343.1745605469041
1994	-1888.864746093801
1995	-2779.327636718801
1996	-2973.966308593808
1997	-2893.370605468808
1998	-3111.1181640625
1999	-3864.57421875
2000	-3846.03125
2001	-3838.611328125
2002	-4305.0712890625
2003	-4573.5703125
2004	-4649.08984375
2005	-5732.587890625
2006	-4605.3515625
2007	-5730.897460937995
2008	-5101.19140625
2009	-6974.71875
2010	-2788.927734375
2011	-9805.830078125
2012	-14643.6171875
2013	-15318.37890625
2014	-14464.388671875
2015	7232.3515625
2016	22687.861328125