TTM20162015201420132012
Gross margin36.6%37.5%38.2%38.9%39.7%40.2%
Gross margin growth (bps)-103-71-71-80-52-117
Operating margin7.0%9.3%11.7%13.1%14.0%15.0%
Operating margin growth (bps)-293-240-139-95-97-150
Net profit margin4.1%5.6%7.0%8.1%8.9%9.5%
Net profit margin growth (bps)-184-134-111-83-62-91