TTM20172016201520142013
Gross margin28.4%28.2%28.5%29.3%30.2%31.2%
Gross margin growth (bps)33-27-86-92-96-89
Operating margin4.3%4.5%7.4%8.2%9.7%10.2%
Operating margin growth (bps)-272-292-77-155-49-30
Net profit margin2.4%2.4%4.6%5.2%6.1%6.4%
Net profit margin growth (bps)-188-219-60-95-25-10