TTM20172016201520142013
Gross margin41.6%41.6%40.7%43.0%44.0%44.3%
Gross margin growth (bps)8787-226-100-25-17
Operating margin14.7%14.7%15.7%20.5%22.3%22.8%
Operating margin growth (bps)-99-99-484-178-50-19
Net profit margin9.8%9.8%10.0%13.2%14.1%14.4%
Net profit margin growth (bps)-23-23-311-94-32-20