Year	thousand metric tons of CO2 equivalent
1970	44999.989333459045
1971	34878.82120668631
1972	39857.87196984899
1973	41337.226713789205
1974	41047.864949879135
1975	44212.14009695797
1976	46314.32306345069
1977	48523.81885064431
1978	51738.313760054676
1979	54990.13596441413
1980	60233.13334685442
1981	63850.239076761754
1982	66579.6275075919
1983	75793.27731733717
1984	64899.19333765644
1985	64131.940687880604
1986	65951.39035493016
1987	71483.4119169347
1988	67941.17920481488
1989	66046.86262973724
1990	-7321.1931517931425
1991	-7072.153795669878
1992	-4538.3999327091415
1993	-951.0028702393649
1994	-2532.796076500429
1995	-2297.568492619218
1996	-4394.423742862033
1997	-7399.285091572432
1998	-8993.338518817232
1999	-9277.428904419436
2000	-14493.388490474803
2001	-15682.84015359739
2002	-13979.586341062022
2003	-17392.576530776823
2004	-12536.78563005287
2005	-5318.67860761399
2006	-2895.7816045823884
2007	-10816.31933468952
2008	-10588.672392925875
2009	1609.041991989192
2010	-13443.079232934164
2011	-8349.60511907611
2012	-886.1973894105104
2013	-7559.479673151882
2014	-8008.737115667296
2015	-19308.59086532713
2016	-20220.96608270337