Year H.Coal B.Coal Oil Smelting Total
kt/a kt/a kt/a kt/a kt/a
1946 50.1 550 1.07 3.12 605
1947 82.8 517 2.2 4.2 606
1948 102 559 3.4 6.14 672
1949 123 632 4.57 7.84 767
1950 61.9 736 2.25 8.56 809
1951 72.3 808 3.64 8.79 893
1952 80.2 847 3.81 11.1 942
1953 103 921 6 16 1047
1954 106 969 8 20 1103
1955 110 1065 8 18 1202
1956 108 1092 10 17 1227
1957 112 1125 11 20 1267
1958 131 1141 12 21 1305
1959 135 1144 16 22 1317
1960 132 1199 19 22 1371
1961 129 1261 20 22 1432
1962 142 1314 21 23 1500
1963 145 1355 25 21 1547
1964 163 1366 32 20 1582
1965 148 1334 36 19 1537
1966 140 1326 43 17 1526
1967 125 1286 45 17 1473
1968 95 1315 53 17 1479
1969 100 1356 56 14 1526
1970 118 1388 62 15 1584
1971 108 1401 63 13 1585
1972 102 1336 83 17 1537
1973 98 1329 90 15 1533
1974 88 1342 101 15 1545
1975 73 1327 102 14 1516
1976 74 1326 99 14 1513
1977 70 1365 115 13 1563
1978 63 1367 114 13 1557
1979 100 1380 121 12 1613
1980 84 1382 140 11 1618
1981 69 1425 142 11 1646
1982 59 1474 117 11 1661
1983 47 1476 107 10 1641
1984 39 1572 111 10 1731
1985 56 1661 102 8 1827
1986 75 1655 100 10 1840
1987 75 1644 99 9 1827
1988 62 1653 96 7 1818
1989 47 1606 97 7 1757
1990 45 1495 94 4 1638