TTM20162015201420132012
Gross margin45.4%46.4%48.1%49.0%48.7%47.9%
Gross margin growth (bps)-188-165-952982-48
Operating margin4.7%8.7%10.3%11.5%11.4%11.4%
Operating margin growth (bps)-454-166-11711-132
Net profit margin2.9%4.1%5.9%6.7%7.0%7.0%
Net profit margin growth (bps)-136-177-88-22-644