Year	thousand metric tons of CO2 equivalent
1970	5.580170898439917
1971	27.337890624999375
1972	56.053814697268905
1973	78.43333740233967
1974	102.58294677729945
1975	151.4813476562013
1976	208.66622314450032
1977	249.06840820309878
1978	287.8743408202984
1979	362.9404541015994
1980	602.8662353516008
1981	756.1523925780984
1982	821.9600097655994
1983	644.916979980502
1984	679.3919311522999
1985	707.9030151367006
1986	652.0188964844001
1987	-1940.8929077147998
1988	441.9247070312025
1989	341.2627685546996