Year	thousand metric tons of CO2 equivalent
1969	0
1970	0.35795359
1971	0.35795359
1972	0.28587983
1973	0.30993366
1974	0.28587952
1975	0.31772148
1976	0.28544769
1977	0.27765956
1978	0.26165302
1979	0.38131612
1980	0.43669235
1981	0.42154761
1982	0.45313072
1983	0.39689083
1984	0.38088491
1985	0.43695213
1986	0.55695933
1987	0.55695933
1988	0.92529544
1989	0.86083745
1990	0.96449525
1991	1.28228028
1992	1.60880328
1993	1.656516
1994	1.9201772
1995	1.92716832
1996	1.95668032
1997	2.06924504
1998	2.2025965
1999	2.32691642
2000	2.43843954
2001	2.58737594
2002	2.70858656
2003	2.95850608
2004	3.04184958
2005	3.17865196
2006	3.3019371
2007	3.48820432
2008	3.4976277