TTM20172016201520142013
Gross margin29.2%28.2%28.5%29.3%30.2%31.2%
Gross margin growth (bps)106-27-86-92-96-89
Operating margin3.4%4.5%7.4%8.2%9.7%10.2%
Operating margin growth (bps)-385-292-77-155-49-30
Net profit margin0.1%2.4%4.6%5.2%6.1%6.4%
Net profit margin growth (bps)-436-219-60-95-25-10