SOUTH KOREA'S LEADING INDICATORS FALL IN DECEMBER South Korea's index of leading indicators fell 0.1 pct to 164.1 (base 1980) in December after a 0.1 pct rise in November, representing a 16.1 pct year-on-year gain from December 1985, Economic Planning Board provisional figures show. The index is based on 10 indicators which include export values, letters of credit received, warehouse stocks, M-1 and M-3 money supply figures and the composite stock exchange index.