Year	thousand metric tons of CO2 equivalent
1969	0
1970	2.92692203992871
1971	2.75868012602368
1972	2.83335093015657
1973	2.89989790028429
1974	2.97962824839819
1975	3.12107285152968
1976	3.18445471880171
1977	3.25412688670598
1978	3.32820541545381
1979	3.37915580044129
1980	3.59322974786778
1981	3.71164071926847
1982	3.58864276403445
1983	3.48717044859337
1984	3.40504579573132
1985	3.21215724479144
1986	2.96364164361608
1987	2.94748218683328
1988	2.99070589836636
1989	3.06365154292019
1990	3.06734801340858
1991	3.07409260186278
1992	3.07824146993253
1993	3.07979062710994
1994	3.08348919786566
1995	3.08718566835405
1996	3.09458070959816
1997	3.10196945004031
1998	3.10936449128442
1999	3.11675743226121
2000	3.12415247350532
2001	3.13154751474943
2002	3.13894255599355
2003	3.14633759723766
2004	3.15373053821445
2005	3.16112557945856
2006	3.16112557945856
2007	3.16112557945856
2008	3.16112557945856