TTM20172016201520142013
Gross margin52.4%52.6%52.4%49.3%52.1%53.9%
Gross margin growth (bps)-321311-279-17317
Operating margin-4.3%-3.9%-1.0%-1.2%2.8%6.9%
Operating margin growth (bps)-157-29920-396-41383
Net profit margin-5.0%-5.3%-7.6%-0.9%2.0%4.4%
Net profit margin growth (bps)411224-665-293-24085