TTM20172016201520142013
Gross margin38.3%38.3%38.4%39.0%37.6%36.6%
Gross margin growth (bps)-4-11-64142102182
Operating margin3.1%3.0%2.7%3.5%1.7%-0.1%
Operating margin growth (bps)4029-8218817267
Net profit margin2.2%1.9%1.9%2.3%1.3%0.1%
Net profit margin growth (bps)291-359312641