TTM20172016201520142013
Gross margin33.7%33.7%34.4%35.2%35.5%35.8%
Gross margin growth (bps)-74-74-78-34-3031
Operating margin2.9%2.9%5.5%5.6%6.6%6.8%
Operating margin growth (bps)-259-259-14-99-2648
Net profit margin1.5%1.5%3.2%3.5%4.1%4.3%
Net profit margin growth (bps)-170-170-26-60-1929