TTM20162015201420132012
Gross margin39.4%39.4%39.1%40.0%40.1%40.3%
Gross margin growth (bps)3232-92-12-15-13
Operating margin5.1%5.1%7.5%10.0%9.6%9.6%
Operating margin growth (bps)-243-243-24337-248
Net profit margin2.4%2.4%4.0%5.4%5.3%4.8%
Net profit margin growth (bps)-156-156-14711507