Year H.Coal B.Coal Oil Smelting Total
kt/a kt/a kt/a kt/a kt/a
1921 0.00369 0 0 0 0.00369
1922 0.00739 0 0 0 0.00739
1923 0.0111 0 0 0 0.0111
1924 0.0148 0 0 0.145 0.16
1925 0.0185 0 0 0.144 0.163
1926 0.111 0 0 0.287 0.398
1927 0.278 0 0 0.714 0.991
1928 0.5 0 0 0.568 1.07
1929 0.667 0 0 0.564 1.23
1930 0.982 0 0 0.701 1.68
1931 0.908 0 0 0.139 1.05
1932 1.98 0 0 0.277 2.26
1933 2.62 0 0.0009 0.141 2.76
1934 2.13 0 0.0009 0.057 2.19
1935 2.67 0 0.0018 0.0903 2.77
1936 2.6 0 0.0018 1.06 3.66
1937 2.19 0 0.0027 2.5 4.69
1938 1.9 0 0.0027 2.28 4.18
1939 2.49 0 0.0045 3.72 6.22
1940 3.33 0 0.0045 3.13 6.47
1941 4.13 0 0.00539 1.38 5.51
1942 5.01 0 0.00449 0.985 6
1943 5.4 0 0.00448 0.946 6.35
1944 6.35 0 0.00357 1.42 7.77
1945 6.86 0 0.00266 1.47 8.33
1946 7.34 0 0.00261 1.51 8.86
1947 8.58 0 0.00259 2.73 11.3
1948 10.5 0 0.0111 3.69 14.2
1949 9.07 0 0.0143 4.71 13.8
1950 5.27 0 0.032 6.83 12.1
1951 4.4 0 0.0608 9.92 14.4
1952 6.12 0 0.077 12.5 18.7
1953 8.75 0 0.0772 13.9 22.7
1954 6.69 0 0.0851 14.2 20.9
1955 4.58 0 0.0715 14.9 19.5
1956 6.33 0 0.0886 14.7 21.1
1957 5.82 0 0.341 15.3 21.5
1958 6.48 0 0.892 15.4 22.8
1959 5.38 0 0.819 15.1 21.3
1960 5.3 0 0.911 15.4 21.7
1961 5.1 0 1.18 15 21.3
1962 4.91 0 1.7 14.8 21.4
1963 5.57 0 5.75 12.6 23.9
1964 6.52 0 6.08 13.7 26.3
1965 6.46 0 6.32 14.3 27.1
1966 7.35 0 7.36 14.1 28.8
1967 8.34 0 7.43 12.3 28.1
1968 8.18 0 8.07 12.6 28.9
1969 6.61 0 7.88 12.9 27.4
1970 7.73 0 9.08 13 29.8
1971 8.78 0 9.49 12.4 30.7
1972 10.6 0 9.76 13.9 34.3
1973 10.4 0 11.7 14.6 36.7
1974 10.3 0 16.1 12.9 39.3
1975 12.1 0 15.7 10.8 38.6
1976 12.8 0 14.5 9.7 36.9
1977 12.4 0 17.1 11.8 41.3
1978 12.6 0 19.8 12 44.4
1979 12 0 26.5 14.5 53
1980 11.6 0 25.6 14.9 52.2
1981 12.7 0 27 19.4 59.1
1982 14.2 0 24.1 27.4 65.7
1983 16.8 0 20 27.2 64.1
1984 17.1 0 22.1 25.9 65.1
1985 18.6 0 21.5 27 67
1986 22.8 0 18.6 18.6 60
1987 22.7 0 22.7 16.4 61.8
1988 23.8 0 23.7 14.9 62.4
1989 24.2 0 25 15.8 65
1990 23.8 0 25.4 15.9 65.1