Year H.Coal B.Coal Oil Smelting Total
kt/a kt/a kt/a kt/a kt/a
1960 0 0 0.0765 0 0.0765
1967 0 0 0.0293 0 0.0293
1970 0 0 0 0.0726 0.0726
1971 0 0 0 0.214 0.214
1972 0 0 0 0.352 0.352
1973 0 0 1.71 0.484 2.19
1976 0 0 0 0.951 0.951
1977 0 0 0 1.35 1.35
1978 0 0 1.12 1.2 2.32
1979 0 0 2.57 1.59 4.16
1980 0 0 0 2.43 2.43
1985 0 0 0 1.22 1.22
1987 0 0 0.0217 0.91 0.931
1988 0 0 1.37 0.879 2.25
1989 0 0 0.611 0.74 1.35