Year	thousand metric tons of CO2 equivalent
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0
1998	0
1999	0
2000	0.0507950765197522
2001	0.0497373503919039
2002	0.0500711059724615
2003	0.0509300060936479
2004	0.0515860413941104
2005	0.0518178647006832
2006	0.0556666885806848
2007	0.0567744808809776
2008	0.0568387070557135