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

      1948         0         0     0.178         0     0.178
      1949         0      10.4     0.339         0      10.8
      1972      44.8         0      17.4         0      62.2
      1973      39.6         0      17.5         0      57.1
      1974      41.9         0      20.4         0      62.2
      1975      44.7         0      17.4         0      62.1
      1976      36.5         0      16.3         0      52.8
      1977      41.5         0      18.2         0      59.7
      1978      43.2         0      20.1         0      63.4
      1979      47.7         0      21.5         0      69.2
      1980      55.2         0      25.7         0        81
      1981      57.5         0      25.8         0      83.3
      1982      67.3         0      24.3         0      91.6
      1983      61.6         0      20.5         0      82.1
      1984      70.1         0      21.2         0      91.3
      1985      85.4         0      19.4         0       105
      1986      85.5         0      19.2         0       105
      1987      88.1         0      19.8         0       108
      1988       104         0      20.2         0       125
      1989       101         0      18.9         0       120
      1990       104         0      18.2         0       122