TTM20162015201420132012
Gross margin28.4%28.4%27.9%27.1%28.1%27.4%
Gross margin growth (bps)545482-11075423
Operating margin-1.7%-1.7%-0.9%-1.7%0.3%0.2%
Operating margin growth (bps)-80-8084-2029395
Net profit margin-1.9%-1.9%-1.1%-1.8%0.3%0.2%
Net profit margin growth (bps)-81-8077-2084429