Year    H.Coal    B.Coal       Oil    Smelting   Total
                kt/a      kt/a      kt/a      kt/a      kt/a

      1955     0.351         0         0         0     0.351
      1956     0.918         0         0         0     0.918
      1957     0.893         0         0         0     0.893
      1958      1.17         0         0         0      1.17
      1959     0.476         0         0         0     0.476
      1960       0.5         0         0         0       0.5
      1961     0.813         0         0         0     0.813
      1962      1.11         0         0         0      1.11
      1963      1.48         0         0         0      1.48
      1964      1.31         0         0         0      1.31
      1965      1.18         0         0         0      1.18
      1966     0.472         0         0         0     0.472
      1967     0.234         0         0         0     0.234
      1968     0.305         0         0         0     0.305