TTM20172016201520142013
Gross margin52.1%52.6%52.4%49.3%52.1%53.9%
Gross margin growth (bps)-7121311-279-17317
Operating margin-4.6%-3.9%-1.0%-1.2%2.8%6.9%
Operating margin growth (bps)-216-29920-396-41383
Net profit margin-5.4%-5.3%-7.6%-0.9%2.0%4.4%
Net profit margin growth (bps)402224-665-293-24085