Year	thousand metric tons of CO2 equivalent
1969	0
1970	0.0210247302369414
1971	0.0227349821185556
1972	0.0242529587272881
1973	0.0251403468744431
1974	0.0259863587052022
1975	0.0269976155784232
1976	0.0282678572553444
1977	0.0290344021115118
1978	0.0299086194822845
1979	0.0304059627843595
1980	0.031519944572453
1981	0.031309287759961
1982	0.0309459415130903
1983	0.028429611233462
1984	0.0272711037781219
1985	0.025906350071668
1986	0.0247593940866041
1987	0.0235475398412611
1988	0.0222978807841049
1989	0.0209468208205966
1990	0.0196936333143378
1991	0.0184356151932363
1992	0.0171728084626384
1993	0.015905192119871
1994	0.0146064498153774
1995	0
1996	0
1997	0
1998	0
1999	0
2000	0
2001	0
2002	0
2003	0
2004	0
2005	0
2006	0
2007	0
2008	0