TTM20162015201420132012
Gross margin35.6%35.1%33.0%29.5%27.2%24.8%
Gross margin growth (bps)182205356226247231
Operating margin2.9%3.1%2.1%0.2%1.0%1.1%
Operating margin growth (bps)2099189-80-11-69
Net profit margin1.8%1.7%0.6%-0.3%0.4%-0.1%
Net profit margin growth (bps)7811983-6443-138