TTM20162015201420132012
Gross margin36.7%37.9%37.0%35.2%33.7%40.0%
Gross margin growth (bps)-10288182147-630332
Operating margin7.7%9.2%9.1%4.7%4.3%11.4%
Operating margin growth (bps)-2111043448-709272
Net profit margin4.9%5.9%6.2%2.4%2.5%6.7%
Net profit margin growth (bps)-176-31375-6-417182