Year	thousand metric tons of CO2 equivalent
1970	-13.152859958839407
1971	-13.084024479865999
1972	-13.4761905256271
1973	-15.031568144416802
1974	-16.128127884864806
1975	-20.763649415779103
1976	-22.015549926853204
1977	-21.5153896939278
1978	-23.547674298191094
1979	-22.328428572845503
1980	-33.531568899822204
1981	-8.567004119586908
1982	-4.451603231143995
1983	8.697532872295398
1984	-3.4075873686789926
1985	-17.8719254369736
1986	-32.3206670866013
1987	-51.18784453487401
1988	-48.127627676773
1989	-45.014790348721014
1990	-58.81713265180599
1991	-56.259381175041
1992	-27.704515874386004
1993	-11.495383441448013
1994	-41.37302398681601
1995	-26.47472596168501
1996	-29.144306421279992
1997	-22.32240778207799
1998	-31.231063127518013
1999	-40.18796503543899
2000	-80.893962562084
2001	-39.15709179639799
2002	-11.378661036490996
2003	-17.650373160838996
2004	-11.671893417835008
2005	-6.612994313239994
2006	-6.026593863964024
2007	28.435686588287012
2008	-51.082286119461
2009	711.5896677970891
2010	-45.13686645030998
2011	-75.909534394741
2012	92.57621991634397
2013	-118.14896309375803
2014	-53.25718271732302
2015	-137.021352052689
2016	-92.41374856233602