Year	thousand metric tons of CO2 equivalent
1969	0
1970	2.3391825
1971	2.4004695
1972	2.5127546
1973	1.52174226
1974	1.5906596
1975	1.53040118
1976	1.49967429
1977	1.08834335
1978	1.31222225
1979	1.38926314
1980	1.51162448
1981	1.71577281
1982	1.75457458
1983	1.6649201
1984	1.57222917
1985	1.55820415
1986	1.55227478
1987	1.57484681
1988	1.53653267
1989	1.56544761
1990	1.60050272
1991	1.57245826
1992	1.58878565
1993	1.61790488
1994	1.61850287
1995	1.6320136
1996	1.63280255
1997	1.66060924
1998	1.67453909
1999	1.69287249
2000	1.5888604654
2001	1.5230108854
2002	1.4351458742
2003	1.4670341048
2004	1.4605036262
2005	1.4605036448
2006	1.4512262779
2007	1.4465888298
2008	1.4396252254