TTM20162015201420132012
Gross margin37.5%37.5%38.2%38.9%39.7%40.2%
Gross margin growth (bps)-71-71-71-80-52-117
Operating margin9.3%9.3%11.7%13.1%14.0%15.0%
Operating margin growth (bps)-240-240-139-95-97-150
Net profit margin5.6%5.6%7.0%8.1%8.9%9.5%
Net profit margin growth (bps)-134-134-111-83-62-91