Year	thousand metric tons of CO2 equivalent
1970	8109.193545312017
1971	11781.614679687013
1972	12340.722414062013
1973	13380.11487500001
1974	16981.057554687017
1975	17727.167203125013
1976	15598.624093749997
1977	19818.43978124999
1978	20959.397046874983
1979	32265.459656249997
1980	27421.193515624982
1981	22082.954562500003
1982	38937.79339062498
1983	27791.130484374982
1984	38814.50953124999
1985	33260.85835937501
1986	37839.30520312498
1987	33506.83739062501
1988	43785.68504687498
1989	38341.261093749985
1990	-19790.22265625
1991	-26103.107421875
1992	-26216.66015625
1993	-7561.67578125
1994	-5065.51953125
1995	-8268.701171875
1996	-2364.72265625
1997	8398.869140625
1998	12929.955078125
1999	6110.361328125
2000	12363.0390625
2001	12426.18359375
2002	13880.478515625
2003	24822.880859375
2004	26893.482421875
2005	27473.2890625
2006	36357.435546875
2007	35648.369140625
2008	56360.017578125
2009	44852.7578125
2010	36071.314453125
2011	40323.513671875
2012	18410.994140625
2013	17505.509765625
2014	22687.255859375
2015	40170.720703125
2016	57197.25390625