TTM20162015201420132012
Gross margin42.9%42.7%43.8%43.7%45.0%41.6%
Gross margin growth (bps)-18-11115-134345-73
Operating margin6.7%6.2%5.8%5.1%5.5%9.3%
Operating margin growth (bps)843671-37-383-221
Net profit margin4.5%3.9%3.8%3.8%4.0%6.9%
Net profit margin growth (bps)118131-28-282-144