TTM20172016201520142013
Gross margin13.8%14.1%14.4%14.6%14.6%19.4%
Gross margin growth (bps)-60-28-21-2-482-150
Operating margin-1.3%-1.3%1.4%1.6%1.5%1.1%
Operating margin growth (bps)-283-271-201534-122
Net profit margin-0.7%-0.7%0.7%0.8%0.7%0.3%
Net profit margin growth (bps)-147-138-8848-79