Year H.Coal B.Coal Oil Smelting Total
kt/a kt/a kt/a kt/a kt/a
1922 0.207 0 0 0 0.207
1923 0.217 0 0 0 0.217
1924 0.228 0 0 0 0.228
1925 0.238 0 0 0 0.238
1926 0.249 0 0 0 0.249
1927 0.259 0 0 0 0.259
1928 0.207 0 0 0 0.207
1929 0.285 0 0 0 0.285
1930 0.195 0 0 0 0.195
1931 0.221 0 0 0 0.221
1932 0.247 0 0 0 0.247
1933 0.13 0 0 0 0.13
1934 0.247 0 0 0 0.247
1935 0.26 0 0 0 0.26
1936 0.221 0 0 0 0.221
1937 0.091 0 0 0 0.091
1938 0.169 0 0 0 0.169
1939 0.208 0 0 0 0.208
1940 0.156 0 0 0 0.156
1941 0.208 0 0 0 0.208
1942 0.208 0 0 0 0.208
1943 0.117 0 0 0 0.117
1944 0.17 0 0 0 0.17
1945 0.73 0 0 0 0.73
1946 1.02 0 0 0 1.02
1947 1.5 0 0 0 1.5
1948 2.12 0 0 0 2.12
1949 1.85 0 0 0 1.85
1950 3.43 0 0 0 3.43
1951 3.75 0 0 0 3.75
1952 4.3 0 0 0 4.3
1953 4.14 0 0 0 4.14
1954 4.23 0 0 0 4.23
1955 5.27 0 0 0 5.27
1956 6.29 0 0 0 6.29
1957 7.31 0 0 0 7.31
1958 7.1 0 0 0 7.1
1959 6.64 0 0 0 6.64
1960 6.76 0 0 0 6.76
1961 7.48 0 4.33 0 11.8
1962 7.63 0 3.26 0 10.9
1963 7.02 0 3.49 0 10.5
1964 6.88 0 3.62 0 10.5
1965 6.52 0 3.69 0 10.2
1966 5.92 0 4.27 0 10.2
1967 5.61 0 4.56 0 10.2
1968 7.33 0 5.23 0 12.6
1969 8.18 0 5.04 0 13.2
1970 7.83 0 4.48 0.436 12.7
1971 8.15 0 4.8 0.572 13.5
1972 6.97 0 4.3 0.703 12
1973 7.53 0 4.42 0.83 12.8
1974 7.33 0 3.05 0.953 11.3
1975 7.1 0 2.62 1.67 11.4
1976 6.79 0 1.7 1.32 9.81
1977 4.21 0 3.14 1.94 9.28
1978 3.03 0 3.14 0.19 6.36
1979 3.09 0 3.51 0.125 6.72
1980 3.9 0 4.64 0.337 8.88
1981 4.35 0 3.11 0.546 8.01
1982 3.38 0 2.8 0.904 7.08
1983 2.24 0 1.42 0.717 4.37
1984 1.51 0 0.618 0.948 3.08
1985 1.28 0 0 0.353 1.63
1986 0.747 0 0 11.8 12.6
1987 0.788 0 0 6.48 7.27
1988 0.819 0 0 5.08 5.9
1989 0.805 0 0 3.7 4.5
1990 0.733 0 0 0 0.733