TTM20162015201420132012
Gross margin36.4%37.9%37.0%35.2%33.7%40.0%
Gross margin growth (bps)-13688182147-630332
Operating margin7.4%9.2%9.1%4.7%4.3%11.4%
Operating margin growth (bps)-2541043448-709272
Net profit margin4.5%5.9%6.2%2.4%2.5%6.7%
Net profit margin growth (bps)-212-31375-6-417182