BELGIAN DECEMBER INDUSTRIAL OUTPUT FALLS Industrial production, excluding construction and adjusted for the number of working days, fell 1.5 pct in December from year earlier levels, the National Statistics Office said. It was also a sharp 16.8 pct below the November level, it said. The office said the production index, base 1980, stood at 97.3 in December against an adjusted 116.9 in November and 98.8 in December 1985.