Year	thousand metric tons of CO2 equivalent
1969	0
1970	0.72048085242
1971	0.70553780803
1972	0.69986857608
1973	0.70673094471
1974	0.70244342957
1975	0.76249403518
1976	0.76782084578
1977	0.8011119076
1978	0.78288543776
1979	0.8323551677
1980	1.02451564952
1981	1.661730975
1982	0.7710077611
1983	0.815097818
1984	0.8494190371
1985	0.8734823376
1986	0.90309931321
1987	0.92727292318
1988	0.94844122265
1989	1.00697805672
1990	0.82542639552
1991	0.82982575463
1992	0.84425950343
1993	0.84456686254
1994	0.85409579134
1995	0.87087531045
1996	0.87234843045
1997	0.88253224045
1998	0.89000386045
1999	6.83714306045
2000	20.69353577045
2001	23.03006002045
2002	23.03359433045
2003	23.03590352045
2004	23.03238967045
2005	23.03238967045
2006	23.03152177926
2007	23.03127645518
2008	23.03059445518