TTM20172016201520142013
Gross margin35.7%36.0%37.5%38.2%38.9%39.7%
Gross margin growth (bps)-160-148-71-71-80-52
Operating margin5.6%6.2%9.3%11.7%13.1%14.0%
Operating margin growth (bps)-312-313-240-139-95-97
Net profit margin3.2%3.4%5.6%7.0%8.1%8.9%
Net profit margin growth (bps)-204-217-134-111-83-62