TTM20172016201520142013
Gross margin54.9%54.9%56.5%57.5%57.9%59.8%
Gross margin growth (bps)-166-166-91-40-199155
Operating margin-1.4%-1.4%7.9%13.6%15.2%16.2%
Operating margin growth (bps)-929-928-572-159-106107
Net profit margin-1.5%-1.5%5.3%9.2%10.4%10.8%
Net profit margin growth (bps)-684-684-386-120-3887