TTM20162015201420132012
Gross margin31.8%31.8%35.7%37.0%35.9%36.6%
Gross margin growth (bps)-385-385-130109-68-61
Operating margin2.5%2.5%8.8%8.9%3.5%-5.8%
Operating margin growth (bps)-631-631-8534932-859
Net profit margin0.3%0.3%4.3%4.9%1.2%-1.1%
Net profit margin growth (bps)-407-407-55370225-322