Nissan Motor Co. on Thursday reported a double-digit drop in profit for the business year ended March 31, marking its first full-year dip since Carlos Ghosn took charge in 1999.

"For the first time in eight years, we have missed the performance objectives we had set for ourselves," Ghosn told a news conference at Nissan's headquarters in Tokyo.

The weak profit figure -- which defies an 11 percent rise in sales aided by the weak yen -- prompted Nissan to push back its deadline for achieving the goals of its medium-term business plan by a year.