Bergen Brunswig's net income was down 23% to $15.9 million for the year ending Aug. 31. Fourth-quarter earnings were down 34% to $3.8 million. Last year's results included a $9.4-million after-tax gain in the fourth quarter, the Orange-based company said. Revenue for the year was up 10% to $3.38 billion. The company said tighter controls on asset management helped to produce a reduction of $2.3 million in interest expense for the year.