TTM20172016201520142013
Gross margin50.9%50.4%47.9%47.7%48.6%50.2%
Gross margin growth (bps)18224325-97-156-125
Operating margin10.8%11.2%-4.9%-1.1%0.8%11.4%
Operating margin growth (bps)1,3971,607-372-191-1,058-382
Net profit margin3.5%2.6%4.1%-17.0%-13.9%-4.3%
Net profit margin growth (bps)-391-1482,107-306-958-440