Year H.Coal B.Coal Oil Smelting Total
kt/a kt/a kt/a kt/a kt/a
1950 0.0126 0 0 0 0.0126
1951 0.0141 0 0 0 0.0141
1952 0.0415 0 0 0 0.0415
1953 0.026 0 0 0 0.026
1954 0.0127 0 0 0 0.0127
1955 0.0135 0 0 0 0.0135
1956 0.0293 0 0 0 0.0293
1957 0.015 0 0 0 0.015
1958 0.014 0 0 0 0.014
1975 0.0245 0 0 0 0.0245