TTM20172016201520142013
Gross margin23.4%23.7%25.3%28.6%28.7%28.8%
Gross margin growth (bps)-67-179-329-13-13281
Operating margin0.9%1.5%2.5%3.2%2.8%2.5%
Operating margin growth (bps)-108-104-693428193
Net profit margin0.3%0.0%0.5%8.0%1.0%0.5%
Net profit margin growth (bps)-14-53-74269751188