Year	thousand metric tons of CO2 equivalent
1970	15886.381657714845
1971	9635.8992578125
1972	10373.310076904301
1973	11152.642547607426
1974	10030.26565307617
1975	11746.668782958983
1976	10687.59492797852
1977	12247.524965209963
1978	13004.757500610353
1979	16737.832008666996
1980	14488.64638183594
1981	13130.724530029303
1982	14715.879500122073
1983	14965.06979248047
1984	12504.709275817871
1985	12695.754612884524
1986	12070.686298370361
1987	15594.444400482174
1988	12190.434624786383
1989	13344.844256591798
1990	-21.480728149410425
1991	-13.533416748046875
1992	-30.203502655029297
1993	-28.684776306148706
1994	-12.663305282589135
1995	-44.3250522613489
1996	19.67659950255984
1997	63.87799453734988
1998	108.99937629700071
1999	144.70780754088992
2000	94.04189682006836
2001	-142.88139343262083
2002	17.66197586059934
2003	-91.76330947875977
2004	-233.5639724731409
2005	-226.53539276123047
2006	-266.75985908507937
2007	-476.87657737731934
2008	-356.90779924393064
2009	-342.27319526672
2010	-500.7903127670288
2011	-443.12240695953005
2012	-512.7604074478113
2013	-419.0716762542688
2014	-413.62933921813965
2015	608.2105789184607
2016	680.8293876647913