TTM20162015201420132012
Gross margin25.1%25.5%25.9%28.2%29.2%28.4%
Gross margin growth (bps)-57-41-237-101851
Operating margin4.8%5.1%4.5%5.5%5.5%4.8%
Operating margin growth (bps)360-98362-121
Net profit margin3.6%3.6%4.1%2.5%3.4%3.0%
Net profit margin growth (bps)75-52155-8642-79