TTM20172016201520142013
Gross margin33.7%33.7%35.7%35.9%38.0%40.1%
Gross margin growth (bps)-200-200-18-209-215-288
Operating margin1.0%1.0%5.5%5.2%8.7%10.3%
Operating margin growth (bps)-448-44830-345-166-445
Net profit margin1.0%1.0%3.7%3.9%6.0%6.7%
Net profit margin growth (bps)-268-268-20-206-75-315