TTM20172016201520142013
Gross margin32.0%32.0%31.8%31.6%32.1%33.1%
Gross margin growth (bps)252519-48-10490
Operating margin1.6%1.6%2.9%2.6%2.6%4.8%
Operating margin growth (bps)-127-127310-220201
Net profit margin0.1%0.1%1.7%1.5%1.5%2.8%
Net profit margin growth (bps)-154-15417-3-129123