Year	thousand metric tons of CO2 equivalent
1969	0
1970	0.27531131
1971	0.275305389
1972	0.332428996
1973	0.342223477
1974	0.317128202
1975	0.37931228
1976	0.37055912
1977	0.39910888
1978	0.4027606061053
1979	0.4040923876937
1980	0.4166110930053
1981	0.602668303589
1982	0.6052984468624
1983	0.709151084516
1984	1.001742459683
1985	0.854005227537
1986	0.827752212773
1987	0.827824894908
1988	1.780885151627
1989	1.827146555322
1990	1.765387546811
1991	1.892212456314
1992	1.929575594403
1993	1.673754054587
1994	1.876601114916
1995	1.942104387902
1996	1.93261329206
1997	1.903397405517
1998	2.191313678
1999	2.169350209
2000	1.799011685
2001	2.163097447
2002	2.182741031
2003	2.229330559
2004	2.431407841
2005	2.542174747
2006	2.799317143
2007	2.981565678
2008	3.165247436