Year H.Coal B.Coal Oil Smelting Total
kt/a kt/a kt/a kt/a kt/a
1923 0 0.0672 0 0 0.0672
1924 0 0.134 0 0 0.134
1925 0 0.202 0 0 0.202
1926 0 0.27 0 0 0.27
1927 0 0.337 0 0 0.337
1928 0 0.405 0 0 0.405
1929 0 0.474 0 0 0.474
1930 0 0.542 0 0 0.542
1931 0 0.61 0 0 0.61
1932 0 0.679 0 0 0.679
1933 0 0.748 0 0 0.748
1934 0 0.817 0 0 0.817
1935 0 0.886 0 0 0.886
1936 0 0.955 0 0 0.955
1937 0 1.02 0 0 1.02
1938 0 1.09 0 0 1.09
1939 0 1.16 0 0 1.16
1940 0 1.23 0 0 1.23
1941 0 1.3 0 0 1.3
1942 0 1.37 0 0 1.37
1943 0 1.44 0 0 1.44
1944 0 1.52 0 0 1.52
1945 0 1.59 0 0 1.59
1946 0 1.66 0 0 1.66
1947 0 1.73 0 0 1.73
1948 0 1.8 0 0 1.8
1949 0 1.87 0 0 1.87
1950 0 1.61 0 0 1.61
1951 0 1.64 0 0 1.64
1952 0 1.68 0 0 1.68
1953 0 1.71 0 0 1.71
1954 0 1.76 0 0 1.76
1955 0 1.81 0.16 0 1.97
1956 0 2.18 0.153 0 2.33
1957 0 2.45 0.162 0 2.62
1958 1.08 2.84 0.414 0 4.33
1959 0.99 3.63 0.502 0 5.12
1960 0.703 3.72 0.419 0 4.84
1961 0.4 4.53 0.364 0 5.3
1962 2.51 5.04 0.381 0 7.94
1963 0.591 4.96 0.401 0 5.95
1964 3.74 3.52 0.395 0 7.65
1965 1.36 5.72 0.346 0 7.42
1966 0.454 6.7 0.353 0 7.51
1967 0.427 7.25 0.368 0 8.04
1968 0.551 8.47 0.346 0 9.37
1969 0.539 9.48 0.259 0 10.3
1970 0.572 11.7 0.012 0 12.2
1971 0.702 12.1 0.0574 0 12.9
1972 0.723 13.1 0.0277 0 13.9
1973 0.801 13.5 0.0335 0 14.3
1974 0.915 14.3 0.0244 0 15.2
1975 1.14 15.6 0.0359 0 16.8
1976 1.35 16.7 0.0219 0 18
1977 1.85 18.7 0.0301 0 20.6
1978 2.11 21.4 0.0343 0 23.5
1979 2.69 23 0.035 0 25.7
1980 2.59 27.3 0 0 29.8
1981 2.29 24.4 0 43.6 70.3
1982 0.932 27.9 0 54.2 83.1
1983 1.37 28.2 0 62.2 91.7
1984 3.03 28.9 0 70 102
1985 3.18 36 0 75.3 114
1986 3.29 38.9 0 79.3 121
1987 4.34 40.4 0 81 126
1988 4.57 46.4 0 70 121
1989 4.58 40.9 0 70.5 116
1990 4.57 40.8 0 69.9 115