TTM20162015201420132012
Gross margin15.8%16.3%17.3%18.2%18.8%18.3%
Gross margin growth (bps)-80-105-90-5650-94
Operating margin4.8%5.8%6.2%6.3%6.3%5.9%
Operating margin growth (bps)-94-34-15-348-5
Net profit margin2.9%3.0%3.4%3.3%3.6%3.1%
Net profit margin growth (bps)4-428-2948-9