TTM20162015201420132012
Gross margin20.6%20.7%24.7%27.5%26.4%27.9%
Gross margin growth (bps)-360-405-274108-15678
Operating margin-4.7%-4.0%0.5%2.3%1.8%3.9%
Operating margin growth (bps)-447-456-17850-20447
Net profit margin-3.3%-2.6%0.2%1.9%1.0%2.3%
Net profit margin growth (bps)-297-286-16586-13027