TTM20162015201420132012
Gross margin20.7%20.7%24.7%27.5%26.4%27.9%
Gross margin growth (bps)-372-405-274108-15678
Operating margin-4.3%-4.0%0.5%2.3%1.8%3.9%
Operating margin growth (bps)-424-456-17850-20447
Net profit margin-2.9%-2.6%0.2%1.9%1.0%2.3%
Net profit margin growth (bps)-273-286-16586-13027