Year	thousand metric tons of CO2 equivalent
1969	0
1970	3.81070591833072
1971	3.81046669788263
1972	4.30946774095557
1973	4.95276576021131
1974	4.15975627561421
1975	4.41876565244198
1976	3.63796943235456
1977	5.08533757401027
1978	3.66889670879195
1979	3.39704020677642
1980	3.74422173359435
1981	3.76416218822421
1982	4.29079345348403
1983	5.15902963466826
1984	4.6241820249285
1985	2.19569809342216
1986	1.61815187258433
1987	1.66678461258094
1988	2.10029809186787
1989	2.55047966017652
1990	1.82036326864005
1991	1.59933901157508
1992	1.29288484795392
1993	1.31077799140111
1994	1.32381066680579
1995	1.32696601181949
1996	1.33001365722514
1997	1.03433174160046
1998	0.957736517126491
1999	1.03213883148589
2000	1.16497401880715
2001	1.14295977492447
2002	1.15789176197437
2003	1.16882671978063
2004	1.27520485223626
2005	1.23001046827513
2006	1.24506892712242
2007	1.06968474754665
2008	1.11264867281402