TTM20162015201420132012
Gross margin29.3%29.2%28.7%28.6%28.9%30.7%
Gross margin growth (bps)-7578-31-18363
Operating margin2.2%1.7%1.1%0.7%2.4%3.7%
Operating margin growth (bps)676144-172-13720
Net profit margin1.2%0.9%0.6%0.3%1.2%2.2%
Net profit margin growth (bps)392935-89-100-291