TTM20152014201320122011
Gross margin41.2%40.5%40.0%38.4%39.0%40.1%
Gross margin growth (bps)1453159-58-110-49
Operating margin-3.1%6.1%5.8%0.1%2.8%5.1%
Operating margin growth (bps)-57232569-274-227111
Net profit margin0.0%3.5%2.9%-4.9%-0.9%37.6%
Net profit margin growth (bps)-13861779-408-3,8503,527