Year	thousand metric tons of CO2 equivalent
1969	0
1970	4.49909908769706
1971	4.62831089383275
1972	4.72508099217357
1973	4.86640563790684
1974	5.12766461106422
1975	5.23254692053085
1976	5.51527442574246
1977	5.75328262599121
1978	5.89059935007444
1979	5.95742847893545
1980	6.22179050423067
1981	6.47260413306002
1982	6.57738413997553
1983	10.0060086844704
1984	2.62009845797782
1985	2.6146863112474
1986	2.75584088699408
1987	2.54035738463882
1988	2.16244533862685
1989	2.00239915213762
1990	2.46631116787368
1991	1.90502591603916
1992	1.7682313614679
1993	1.72264230577277
1994	1.72264230577277
1995	1.7226425157995
1996	1.7226425157995
1997	1.72264230577277
1998	1.72264230577277
1999	1.7226425157995
2000	1.72264230577277
2001	1.72264230577277
2002	1.72264230577277
2003	1.72264230577277
2004	1.72264230577277
2005	1.72264230577277
2006	1.72264230577277
2007	1.72264276573132
2008	1.72264276573132