Year	thousand metric tons of CO2 equivalent
1970	12.469218867683423
1971	13.626514394235642
1972	9.95743710808756
1973	15.777788979673403
1974	17.62581107244489
1975	13.103355790853584
1976	8.094063463449515
1977	7.539673535537702
1978	8.283179271602648
1979	11.332454924488047
1980	15.693617035484294
1981	8.349129574680376
1982	6.278894655990712
1983	9.678564925861224
1984	24.246036642074557
1985	27.287768049049248
1986	17.291581109333094
1987	-3.83652999677696
1988	61.133152580738056
1989	63.82224870443292
1990	20.4035843610759
1991	9.555878400803067
1992	21.504005372524034
1993	27.82986658811592
1994	37.16904425620987
1995	36.85044366121292
1996	32.976804971694946
1997	46.17554932832695
1998	24.934039711951982
1999	41.675595343112946
2000	-3.848143160342943
2001	-24.593930244446028
2002	-18.414568662642978
2003	19.660880684853055
2004	15.860280036926042
2005	33.36824536323502
2006	20.643855214118958
2007	20.96328103542305
2008	9.047872900963057
2009	30.388737916945956
2010	21.539007663726807
2011	29.21466624736786
2012	54.04705095291092
2013	73.53086709976196
2014	81.81015914678619
2015	89.34137475490616
2016	111.2939304113388