TOKYO, May 24 (AFP) - Japan's trade surplus in April fell 12.6 percent from a year earlier to 1,069.1 billion yen (8.6 billion dollars), the finance ministry said Monday. Exports in the month declined 7.4 percent to 4,023.8 billion yen and imports were down 5.4 percent to 2,954.7 billion yen.  