TTM20172016201520142013
Gross margin44.1%44.6%46.2%46.0%44.8%43.6%
Gross margin growth (bps)-163-166271201189
Operating margin13.7%13.8%13.9%13.6%13.2%12.7%
Operating margin growth (bps)68-8264152-25
Net profit margin11.5%12.3%11.6%10.7%9.7%9.8%
Net profit margin growth (bps)-137392101-829