Year	thousand metric tons of CO2 equivalent
1969	0
1970	10.121337516305
1971	7.73857760157169
1972	7.76324253193491
1973	7.66501019387958
1974	6.62974230852634
1975	6.6558141239585
1976	4.91944245680655
1977	5.13421877563117
1978	5.19036396181525
1979	5.29679584851276
1980	5.13888136908813
1981	5.27671288234396
1982	4.80954084448084
1983	5.04694300713286
1984	4.91298539494887
1985	4.62821458019392
1986	4.45321952974668
1987	4.38324738066067
1988	4.49658398019306
1989	1.90863542495905
1990	1.40254747086095
1991	1.38802710470234
1992	1.39559945051385
1993	1.40205233283957
1994	1.40113119759707
1995	1.40020794108456
1996	1.4012811776866
1997	1.4565434114881
1998	1.45761664809012
1999	1.53997023009038
2000	1.62232171182332
2001	1.67936287204735
2002	1.73459780237366
2003	1.73544631037213
2004	1.75093754610345
2005	1.7518574631909
2006	1.7587802173221
2007	1.76241836338694
2008	1.76691293545805