TTM20162015201420132012
Gross margin36.5%35.1%33.0%29.5%27.2%24.8%
Gross margin growth (bps)181205356226247231
Operating margin2.0%3.1%2.1%0.2%1.0%1.1%
Operating margin growth (bps)-11599189-80-11-69
Net profit margin1.2%1.7%0.6%-0.3%0.4%-0.1%
Net profit margin growth (bps)-4511983-6443-138