TTM20172016201520142013
Gross margin46.4%46.4%44.2%42.8%42.1%41.1%
Gross margin growth (bps)2232231406510463
Operating margin7.4%7.4%8.5%12.0%9.4%10.5%
Operating margin growth (bps)-107-107-352258-110-434
Net profit margin4.5%4.5%5.3%9.8%6.2%7.1%
Net profit margin growth (bps)-75-75-452362-96-389