Year H.Coal B.Coal Oil Smelting Total
kt/a kt/a kt/a kt/a kt/a
1953 0.013 0 0 0 0.013
1954 0.0127 0 0 0 0.0127
1955 0.0135 0 0 0 0.0135
1956 0.0146 0 0 0 0.0146
1958 0.014 0 0 0 0.014
1959 0.0134 0 0 0 0.0134
1960 0.0133 0 0 0 0.0133
1961 0.0131 0 0 0 0.0131
1963 0.0138 0 0 0 0.0138
1964 0.0136 0 0 0 0.0136
1965 0.0134 0 0 0 0.0134
1966 0.0132 0 0 0 0.0132
1967 0.013 0 0 0 0.013
1968 0.0128 0 0 0 0.0128
1969 0.0129 0 0 0 0.0129
1970 0.0132 0 0 0 0.0132
1971 0.0125 0 0 5.45 5.46
1972 0.0124 0 0 10.7 10.7
1973 0.012 0 4.32 15.8 20.2
1974 0.012 0 5.8 20.7 26.6
1975 0.0123 0 7.49 18 25.5
1976 0.012 0 7.35 16 23.4
1977 0.0116 0 9.79 16.1 25.9
1978 0 0 9.93 9.08 19
1979 0 0 10.2 15.8 26.1
1980 0 0 9.89 9.49 19.4
1981 0 0 10.2 13.2 23.4
1982 0 0 7.24 5.06 12.3
1983 0 0 7.39 13.7 21.1
1984 0 0 8.34 14.2 22.5
1985 0 0 7.66 15.3 22.9
1986 0 0 6.72 12.8 19.6
1987 0 0 6.81 19.1 25.9
1988 0 0 7.03 16.6 23.7
1989 0 0 6.85 17.6 24.5
1990 0 0 6.27 16.4 22.6