TTM20162015201420132012
Gross margin26.3%26.3%26.4%25.0%24.3%24.3%
Gross margin growth (bps)-12-12137702129
Operating margin4.9%4.9%4.9%5.0%6.1%6.7%
Operating margin growth (bps)44-11-112-60-46
Net profit margin0.4%0.4%-13.2%1.8%1.6%2.8%
Net profit margin growth (bps)1,3561,356-1,49715-118-108