TTM20152014201320122011
Gross margin44.7%45.4%45.2%50.1%49.9%49.7%
Gross margin growth (bps)-7218-4841519-24
Operating margin8.2%8.5%8.7%10.2%10.6%10.8%
Operating margin growth (bps)-55-17-152-42-1890
Net profit margin4.7%4.9%5.0%6.0%6.2%6.4%
Net profit margin growth (bps)-31-15-102-21-1556