Year	thousand metric tons of CO2 equivalent
1969	0
1970	1.81331059827305
1971	1.87911835621352
1972	1.75506677457347
1973	1.58731298379697
1974	1.23008989618475
1975	1.25719692917987
1976	1.3023154640869
1977	1.33863828107108
1978	1.35950991652205
1979	1.51378082489133
1980	1.68697930457025
1981	1.70837321979722
1982	1.6761899835007
1983	1.62182235016434
1984	1.51827467237022
1985	1.39431713860063
1986	1.18728771040366
1987	1.34898324438257
1988	1.37997881941303
1989	1.66620451034527
1990	1.68116751624326
1991	1.70758333236
1992	1.63336658922018
1993	1.51582175336161
1994	1.55309520804337
1995	1.50628655021674
1996	1.44805449011444
1997	1.44787103806458
1998	1.46155327154529
1999	1.47460697902695
2000	1.48260226617062
2001	1.48823351341826
2002	1.51475319195464
2003	1.50089617422731
2004	1.44677106926007
2005	1.44680884466814
2006	1.42085599467794
2007	1.40795520345954
2008	1.38843741922735