TTM20152014201320122011
Gross margin30.1%29.8%29.1%29.1%28.3%30.0%
Gross margin growth (bps)8366379-1699
Operating margin0.7%1.0%-0.3%1.4%-0.9%3.0%
Operating margin growth (bps)99129-171225-380-131
Net profit margin0.2%0.7%-1.6%0.5%-0.6%1.8%
Net profit margin growth (bps)89236-212111-244-88