Year	thousand metric tons of CO2 equivalent
1970	147.84745231056215
1971	148.67962840461732
1972	155.53111731719972
1973	217.20600068855302
1974	211.15403257560698
1975	202.37121307373002
1976	188.46115534019498
1977	25.768757338523976
1980	171.65035130119298
1981	114.31363502693202
1982	138.420951068878
1983	188.12295857048002