TTM20172016201520142013
Gross margin27.1%27.6%28.6%29.2%29.1%29.2%
Gross margin growth (bps)-143-99-555-10-25
Operating margin1.5%1.8%2.9%4.6%4.7%4.4%
Operating margin growth (bps)-94-106-169-72287
Net profit margin1.3%0.9%1.6%2.6%2.6%2.5%
Net profit margin growth (bps)-9-73-9711447