TTM20172016201520142013
Gross margin42.0%41.6%40.7%43.0%44.0%44.3%
Gross margin growth (bps)11887-226-100-25-17
Operating margin14.8%14.7%15.7%20.5%22.3%22.8%
Operating margin growth (bps)29-99-484-178-50-19
Net profit margin10.5%9.8%10.0%13.2%14.1%14.4%
Net profit margin growth (bps)112-23-311-94-32-20